79712671954 has 32 divisors (see below), whose sum is σ = 127234981440. Its totient is φ = 37394952000.

The previous prime is 79712671921. The next prime is 79712671957. The reversal of 79712671954 is 45917621797.

It is a happy number.

It is a super-2 number, since 2×79712671954² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (58).

It is not an unprimeable number, because it can be changed into a prime (79712671957) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 157929 + ... + 429379.

It is an arithmetic number, because the mean of its divisors is an integer number (3976093170).

Almost surely, 2^79712671954 is an apocalyptic number.

79712671954 is a deficient number, since it is larger than the sum of its proper divisors (47522309486).

79712671954 is a wasteful number, since it uses less digits than its factorization.

79712671954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271626.

The product of its digits is 6667920, while the sum is 58.

The spelling of 79712671954 in words is "seventy-nine billion, seven hundred twelve million, six hundred seventy-one thousand, nine hundred fifty-four".