79153621140 has 192 divisors, whose sum is σ = 257992842240. Its totient is φ = 17929589760.

The previous prime is 79153621139. The next prime is 79153621163. The reversal of 79153621140 is 4112635197.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 872187 + ... + 958653.

It is an arithmetic number, because the mean of its divisors is an integer number (1343712720).

Almost surely, 2^79153621140 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 79153621140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128996421120).

79153621140 is an abundant number, since it is smaller than the sum of its proper divisors (178839221100).

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

79153621140 is a wasteful number, since it uses less digits than its factorization.

79153621140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86582 (or 86580 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 39.

The spelling of 79153621140 in words is "seventy-nine billion, one hundred fifty-three million, six hundred twenty-one thousand, one hundred forty".