79612278144 has 64 divisors (see below), whose sum is σ = 241680138240. Its totient is φ = 22746364416.

The previous prime is 79612278143. The next prime is 79612278191. The reversal of 79612278144 is 44187221697.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×79612278144² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79612278143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14806144 + ... + 14811519.

It is an arithmetic number, because the mean of its divisors is an integer number (3776252160).

Almost surely, 2^79612278144 is an apocalyptic number.

It is an amenable number.

79612278144 is an abundant number, since it is smaller than the sum of its proper divisors (162067860096).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

79612278144 is a wasteful number, since it uses less digits than its factorization.

79612278144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29617687 (or 29617675 counting only the distinct ones).

The product of its digits is 1354752, while the sum is 51.

The spelling of 79612278144 in words is "seventy-nine billion, six hundred twelve million, two hundred seventy-eight thousand, one hundred forty-four".