79774146720 has 144 divisors (see below), whose sum is σ = 272477211552. Its totient is φ = 21253731840.

The previous prime is 79774146713. The next prime is 79774146731. The reversal of 79774146720 is 2764147797.

79774146720 is a `hidden beast` number, since 7 + 97 + 74 + 1 + 467 + 20 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1592455 + ... + 1641785.

It is an arithmetic number, because the mean of its divisors is an integer number (1892202858).

Almost surely, 2^79774146720 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 79774146720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (136238605776).

79774146720 is an abundant number, since it is smaller than the sum of its proper divisors (192703064832).

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

79774146720 is a wasteful number, since it uses less digits than its factorization.

79774146720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50475 (or 50464 counting only the distinct ones).

The product of its (nonzero) digits is 4148928, while the sum is 54.

The spelling of 79774146720 in words is "seventy-nine billion, seven hundred seventy-four million, one hundred forty-six thousand, seven hundred twenty".