79876780416 has 96 divisors (see below), whose sum is σ = 237268499520. Its totient is φ = 25766691840.

The previous prime is 79876780409. The next prime is 79876780453. The reversal of 79876780416 is 61408767897.

79876780416 is a `hidden beast` number, since 7 + 9 + 87 + 67 + 80 + 416 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×79876780416² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1082635 + ... + 1154058.

It is an arithmetic number, because the mean of its divisors is an integer number (2471546870).

Almost surely, 2^79876780416 is an apocalyptic number.

It is an amenable number.

79876780416 is an abundant number, since it is smaller than the sum of its proper divisors (157391719104).

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

79876780416 is a wasteful number, since it uses less digits than its factorization.

79876780416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2236744 (or 2236729 counting only the distinct ones).

The product of its (nonzero) digits is 28449792, while the sum is 63.

The spelling of 79876780416 in words is "seventy-nine billion, eight hundred seventy-six million, seven hundred eighty thousand, four hundred sixteen".