78137258480 has 40 divisors (see below), whose sum is σ = 183432923232. Its totient is φ = 30951454464.

The previous prime is 78137258477. The next prime is 78137258501. The reversal of 78137258480 is 8485273187.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×78137258480² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4733099 + ... + 4749578.

Almost surely, 2^78137258480 is an apocalyptic number.

It is an amenable number.

78137258480 is an abundant number, since it is smaller than the sum of its proper divisors (105295664752).

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

78137258480 is a wasteful number, since it uses less digits than its factorization.

78137258480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9482793 (or 9482787 counting only the distinct ones).

The product of its (nonzero) digits is 3010560, while the sum is 53.

The spelling of 78137258480 in words is "seventy-eight billion, one hundred thirty-seven million, two hundred fifty-eight thousand, four hundred eighty".