78540344888 has 64 divisors (see below), whose sum is σ = 155632216320. Its totient is φ = 37108454400.

The previous prime is 78540344873. The next prime is 78540344917. The reversal of 78540344888 is 88844304587.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2691818 + ... + 2720838.

It is an arithmetic number, because the mean of its divisors is an integer number (2431753380).

Almost surely, 2^78540344888 is an apocalyptic number.

It is an amenable number.

78540344888 is a deficient number, since it is larger than the sum of its proper divisors (77091871432).

78540344888 is a wasteful number, since it uses less digits than its factorization.

78540344888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29328 (or 29324 counting only the distinct ones).

The product of its (nonzero) digits is 27525120, while the sum is 59.

The spelling of 78540344888 in words is "seventy-eight billion, five hundred forty million, three hundred forty-four thousand, eight hundred eighty-eight".