79269947136 has 144 divisors (see below), whose sum is σ = 235255161120. Its totient is φ = 26328637440.

The previous prime is 79269947117. The next prime is 79269947171. The reversal of 79269947136 is 63174996297.

79269947136 is a `hidden beast` number, since 79 + 2 + 6 + 99 + 471 + 3 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1921866 + ... + 1962678.

Almost surely, 2^79269947136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 79269947136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117627580560).

79269947136 is an abundant number, since it is smaller than the sum of its proper divisors (155985213984).

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

79269947136 is a wasteful number, since it uses less digits than its factorization.

79269947136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41119 (or 41099 counting only the distinct ones).

The product of its digits is 30862944, while the sum is 63.

The spelling of 79269947136 in words is "seventy-nine billion, two hundred sixty-nine million, nine hundred forty-seven thousand, one hundred thirty-six".