79458628257 has 6 divisors (see below), whose sum is σ = 114773574162. Its totient is φ = 52972418832.

The previous prime is 79458628247. The next prime is 79458628283. The reversal of 79458628257 is 75282685497.

79458628257 is a `hidden beast` number, since 7 + 9 + 4 + 586 + 28 + 25 + 7 = 666.

It can be written as a sum of positive squares in only one way, i.e., 54885244176 + 24573384081 = 234276^2 + 156759^2 .

It is not a de Polignac number, because 79458628257 - 2⁷ = 79458628129 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 79458628194 and 79458628203.

It is not an unprimeable number, because it can be changed into a prime (79458628247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4414368228 + ... + 4414368245.

It is an arithmetic number, because the mean of its divisors is an integer number (19128929027).

Almost surely, 2^79458628257 is an apocalyptic number.

It is an amenable number.

79458628257 is a deficient number, since it is larger than the sum of its proper divisors (35314945905).

79458628257 is a wasteful number, since it uses less digits than its factorization.

79458628257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8828736479 (or 8828736476 counting only the distinct ones).

The product of its digits is 67737600, while the sum is 63.

The spelling of 79458628257 in words is "seventy-nine billion, four hundred fifty-eight million, six hundred twenty-eight thousand, two hundred fifty-seven".