78150474780 has 96 divisors (see below), whose sum is σ = 254800111104. Its totient is φ = 17525923584.

The previous prime is 78150474737. The next prime is 78150474841. The reversal of 78150474780 is 8747405187.

It is a super-2 number, since 2×78150474780² (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 31 ways as a sum of consecutive naturals, for example, 1733142 + ... + 1777661.

It is an arithmetic number, because the mean of its divisors is an integer number (2654167824).

Almost surely, 2^78150474780 is an apocalyptic number.

78150474780 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

78150474780 is an abundant number, since it is smaller than the sum of its proper divisors (176649636324).

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

78150474780 is a wasteful number, since it uses less digits than its factorization.

78150474780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3510875 (or 3510873 counting only the distinct ones).

The product of its (nonzero) digits is 1756160, while the sum is 51.

The spelling of 78150474780 in words is "seventy-eight billion, one hundred fifty million, four hundred seventy-four thousand, seven hundred eighty".