78558264660 has 48 divisors (see below), whose sum is σ = 219985218432. Its totient is φ = 20946768000.

The previous prime is 78558264607. The next prime is 78558264667. The reversal of 78558264660 is 6646285587.

It is a self number, because there is not a number n which added to its sum of digits gives 78558264660.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78558264667) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 591385 + ... + 711935.

It is an arithmetic number, because the mean of its divisors is an integer number (4583025384).

Almost surely, 2^78558264660 is an apocalyptic number.

It is an amenable number.

78558264660 is an abundant number, since it is smaller than the sum of its proper divisors (141426953772).

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

78558264660 is a wasteful number, since it uses less digits than its factorization.

78558264660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131424 (or 131422 counting only the distinct ones).

The product of its (nonzero) digits is 19353600, while the sum is 57.

The spelling of 78558264660 in words is "seventy-eight billion, five hundred fifty-eight million, two hundred sixty-four thousand, six hundred sixty".