Search a number
-
+
27955155155973 = 344321034729237
BaseRepresentation
bin1100101101100110100010…
…00101111011110000000101
310122222111010211100210102220
412112303101011323300011
512131004124204442343
6135242230533322553
75613456543115503
oct626632105736005
9118874124323386
1027955155155973
1189a8795329201
123175a90a96459
13127a21017c716
146c9072ad9673
1533729ed0a183
hex196cd117bc05

27955155155973 has 8 divisors (see below), whose sum is σ = 37357679126688. Its totient is φ = 18594700644624.

The previous prime is 27955155155971. The next prime is 27955155155981. The reversal of 27955155155973 is 37955155155972.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 27955155155973 - 21 = 27955155155971 is a prime.

It is a super-4 number, since 4×279551551559734 (a number of 55 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 27955155155898 and 27955155155907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27955155155971) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10517363290 + ... + 10517365947.

It is an arithmetic number, because the mean of its divisors is an integer number (4669709890836).

Almost surely, 227955155155973 is an apocalyptic number.

It is an amenable number.

27955155155973 is a deficient number, since it is larger than the sum of its proper divisors (9402523970715).

27955155155973 is a wasteful number, since it uses less digits than its factorization.

27955155155973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21034729683.

The product of its digits is 372093750, while the sum is 69.

Subtracting 27955155155973 from its reverse (37955155155972), we obtain a palindrome (9999999999999).

The spelling of 27955155155973 in words is "twenty-seven trillion, nine hundred fifty-five billion, one hundred fifty-five million, one hundred fifty-five thousand, nine hundred seventy-three".

Divisors: 1 3 443 1329 21034729237 63104187711 9318385051991 27955155155973