79944169536 has 1323 divisors, whose sum is σ = 323064140637. Its totient is φ = 19543265280.

The previous prime is 79944169507. The next prime is 79944169567. The reversal of 79944169536 is 63596144997.

The square root of 79944169536 is 282744.

It is a perfect power (a square), and thus also a powerful number.

79944169536 is a `hidden beast` number, since 7 + 9 + 94 + 4 + 1 + 6 + 9 + 536 = 666.

It can be written as a sum of positive squares in only one way, i.e., 62240270400 + 17703899136 = 249480^2 + 133056^2 .

It is a tau number, because it is divible by the number of its divisors (1323).

It is a Harshad number since it is a multiple of its sum of digits (63).

Its product of digits (44089920) is a multiple of the sum of its prime divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 188 ways as a sum of consecutive naturals, for example, 4702598200 + ... + 4702598216.

Almost surely, 2^79944169536 is an apocalyptic number.

79944169536 is the 282744-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 79944169536

79944169536 is an abundant number, since it is smaller than the sum of its proper divisors (243119971101).

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

79944169536 is a wasteful number, since it uses less digits than its factorization.

79944169536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100 (or 40 counting only the distinct ones).

The product of its digits is 44089920, while the sum is 63.

The spelling of 79944169536 in words is "seventy-nine billion, nine hundred forty-four million, one hundred sixty-nine thousand, five hundred thirty-six".