78020902080 has 224 divisors, whose sum is σ = 300262625280. Its totient is φ = 18914135040.

The previous prime is 78020902051. The next prime is 78020902087. The reversal of 78020902080 is 8020902087.

It is a super-2 number, since 2×78020902080² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (78020902087) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 315424 + ... + 505503.

Almost surely, 2^78020902080 is an apocalyptic number.

It is an amenable number.

78020902080 is an abundant number, since it is smaller than the sum of its proper divisors (222241723200).

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

78020902080 is a wasteful number, since it uses less digits than its factorization.

78020902080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 820964 (or 820948 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

It can be divided in two parts, 78020 and 902080, that added together give a square (980100 = 990²).

The spelling of 78020902080 in words is "seventy-eight billion, twenty million, nine hundred two thousand, eighty".