78079201620 has 96 divisors (see below), whose sum is σ = 250561721088. Its totient is φ = 17796083712.

The previous prime is 78079201591. The next prime is 78079201633. The reversal of 78079201620 is 2610297087.

It is a super-2 number, since 2×78079201620² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 115059 + ... + 411578.

It is an arithmetic number, because the mean of its divisors is an integer number (2610017928).

Almost surely, 2^78079201620 is an apocalyptic number.

78079201620 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

78079201620 is an abundant number, since it is smaller than the sum of its proper divisors (172482519468).

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

78079201620 is a wasteful number, since it uses less digits than its factorization.

78079201620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 527009 (or 527007 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 42.

The spelling of 78079201620 in words is "seventy-eight billion, seventy-nine million, two hundred one thousand, six hundred twenty".