78231515750580 has 24 divisors (see below), whose sum is σ = 219048244101792. Its totient is φ = 20861737533472.

The previous prime is 78231515750569. The next prime is 78231515750603. The reversal of 78231515750580 is 8505751513287.

It is a super-2 number, since 2×78231515750580² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 78231515750580.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 651929297862 + ... + 651929297981.

It is an arithmetic number, because the mean of its divisors is an integer number (9127010170908).

Almost surely, 2^{78231515750580} is an apocalyptic number.

It is an amenable number.

78231515750580 is an abundant number, since it is smaller than the sum of its proper divisors (140816728351212).

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

78231515750580 is a wasteful number, since it uses less digits than its factorization.

78231515750580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1303858595855 (or 1303858595853 counting only the distinct ones).

The product of its (nonzero) digits is 11760000, while the sum is 57.

The spelling of 78231515750580 in words is "seventy-eight trillion, two hundred thirty-one billion, five hundred fifteen million, seven hundred fifty thousand, five hundred eighty".