79968301440 has 64 divisors (see below), whose sum is σ = 254898966960. Its totient is φ = 21324879872.

The previous prime is 79968301423. The next prime is 79968301447. The reversal of 79968301440 is 4410386997.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79968301447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20823159 + ... + 20826998.

Almost surely, 2^79968301440 is an apocalyptic number.

It is an amenable number.

79968301440 is an abundant number, since it is smaller than the sum of its proper divisors (174930665520).

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

79968301440 is a wasteful number, since it uses less digits than its factorization.

79968301440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41650179 (or 41650167 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 51.

The spelling of 79968301440 in words is "seventy-nine billion, nine hundred sixty-eight million, three hundred one thousand, four hundred forty".