79852139136 has 768 divisors, whose sum is σ = 300622233600. Its totient is φ = 19740672000.

The previous prime is 79852139123. The next prime is 79852139141. The reversal of 79852139136 is 63193125897.

79852139136 is a `hidden beast` number, since 79 + 8 + 521 + 39 + 13 + 6 = 666.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

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 95 ways as a sum of consecutive naturals, for example, 195237300 + ... + 195237708.

It is an arithmetic number, because the mean of its divisors is an integer number (391435200).

Almost surely, 2^79852139136 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 79852139136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (150311116800).

79852139136 is an abundant number, since it is smaller than the sum of its proper divisors (220770094464).

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

79852139136 is a wasteful number, since it uses less digits than its factorization.

79852139136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549 (or 534 counting only the distinct ones).

The product of its digits is 2449440, while the sum is 54.

The spelling of 79852139136 in words is "seventy-nine billion, eight hundred fifty-two million, one hundred thirty-nine thousand, one hundred thirty-six".