79954587388 has 48 divisors (see below), whose sum is σ = 151240279680. Its totient is φ = 36766021824.

The previous prime is 79954587353. The next prime is 79954587421. The reversal of 79954587388 is 88378545997.

It is a super-3 number, since 3×79954587388³ (a number of 34 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 79954587388.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28121895 + ... + 28124737.

It is an arithmetic number, because the mean of its divisors is an integer number (3150839160).

Almost surely, 2^79954587388 is an apocalyptic number.

It is an amenable number.

79954587388 is a deficient number, since it is larger than the sum of its proper divisors (71285692292).

79954587388 is a wasteful number, since it uses less digits than its factorization.

79954587388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4666 (or 4664 counting only the distinct ones).

The product of its digits is 609638400, while the sum is 73.

The spelling of 79954587388 in words is "seventy-nine billion, nine hundred fifty-four million, five hundred eighty-seven thousand, three hundred eighty-eight".