Search a number
-
+
118744579957 = 686317302139
BaseRepresentation
bin110111010010110111…
…0100111111101110101
3102100111111212122221211
41232211232213331311
53421142103024312
6130314524241421
711402413163443
oct1564556477565
9370444778854
10118744579957
11463a52464a3
121b01b3a0271
13b27508a783
145a6670bb93
15314eb6e3a7
hex1ba5ba7f75

118744579957 has 4 divisors (see below), whose sum is σ = 118761888960. Its totient is φ = 118727270956.

The previous prime is 118744579949. The next prime is 118744579973. The reversal of 118744579957 is 759975447811.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 759975447811 = 5557136760023.

It is a cyclic number.

It is not a de Polignac number, because 118744579957 - 23 = 118744579949 is a prime.

It is a super-2 number, since 2×1187445799572 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 118744579892 and 118744579901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118744570957) 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, 8644207 + ... + 8657932.

It is an arithmetic number, because the mean of its divisors is an integer number (29690472240).

Almost surely, 2118744579957 is an apocalyptic number.

It is an amenable number.

118744579957 is a deficient number, since it is larger than the sum of its proper divisors (17309003).

118744579957 is an equidigital number, since it uses as much as digits as its factorization.

118744579957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17309002.

The product of its digits is 88905600, while the sum is 67.

The spelling of 118744579957 in words is "one hundred eighteen billion, seven hundred forty-four million, five hundred seventy-nine thousand, nine hundred fifty-seven".

Divisors: 1 6863 17302139 118744579957