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11995255039 = 81551147089
BaseRepresentation
bin10110010101111100…
…10001000011111111
31010221222012002111011
423022332101003333
5144031241130124
65302135540051
7603152662015
oct131276210377
933858162434
1011995255039
1150a6010719
1223a922a627
131192192b61
1481b1448b5
154a3134994
hex2caf910ff

11995255039 has 4 divisors (see below), whose sum is σ = 11995483680. Its totient is φ = 11995026400.

The previous prime is 11995254967. The next prime is 11995255043. The reversal of 11995255039 is 93055259911.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11995255039 - 211 = 11995252991 is a prime.

It is a super-2 number, since 2×119952550392 (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11995254983 and 11995255001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11995255639) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8007 + ... + 155095.

It is an arithmetic number, because the mean of its divisors is an integer number (2998870920).

Almost surely, 211995255039 is an apocalyptic number.

11995255039 is a deficient number, since it is larger than the sum of its proper divisors (228641).

11995255039 is an equidigital number, since it uses as much as digits as its factorization.

11995255039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228640.

The product of its (nonzero) digits is 546750, while the sum is 49.

The spelling of 11995255039 in words is "eleven billion, nine hundred ninety-five million, two hundred fifty-five thousand, thirty-nine".

Divisors: 1 81551 147089 11995255039