28537380718 has 48 divisors (see below), whose sum is σ = 56692692864. Its totient is φ = 10464416640.

The previous prime is 28537380671. The next prime is 28537380727. The reversal of 28537380718 is 81708373582.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 276096 + ... + 365107.

It is an arithmetic number, because the mean of its divisors is an integer number (1181097768).

Almost surely, 2^28537380718 is an apocalyptic number.

28537380718 is a deficient number, since it is larger than the sum of its proper divisors (28155312146).

28537380718 is a wasteful number, since it uses less digits than its factorization.

28537380718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641257 (or 641240 counting only the distinct ones).

The product of its (nonzero) digits is 2257920, while the sum is 52.

The spelling of 28537380718 in words is "twenty-eight billion, five hundred thirty-seven million, three hundred eighty thousand, seven hundred eighteen".