79674745920 has 1792 divisors, whose sum is σ = 364051169280. Its totient is φ = 14244249600.

The previous prime is 79674745897. The next prime is 79674745921. The reversal of 79674745920 is 2954747697.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is not an unprimeable number, because it can be changed into a prime (79674745921) by changing a digit.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 1122179485 + ... + 1122179555.

Almost surely, 2^79674745920 is an apocalyptic number.

79674745920 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 79674745920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (182025584640).

79674745920 is an abundant number, since it is smaller than the sum of its proper divisors (284376423360).

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

79674745920 is a wasteful number, since it uses less digits than its factorization.

79674745920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192 (or 182 counting only the distinct ones).

The product of its (nonzero) digits is 26671680, while the sum is 60.

The spelling of 79674745920 in words is "seventy-nine billion, six hundred seventy-four million, seven hundred forty-five thousand, nine hundred twenty".