28761731431616 has 28 divisors (see below), whose sum is σ = 57877920830160. Its totient is φ = 14178318309120.

The previous prime is 28761731431577. The next prime is 28761731431649. The reversal of 28761731431616 is 61613413716782.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3164798651 + ... + 3164807738.

Almost surely, 2^{28761731431616} is an apocalyptic number.

It is an amenable number.

28761731431616 is an abundant number, since it is smaller than the sum of its proper divisors (29116189398544).

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

28761731431616 is an equidigital number, since it uses as much as digits as its factorization.

28761731431616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6329606472 (or 6329606462 counting only the distinct ones).

The product of its digits is 6096384, while the sum is 56.

The spelling of 28761731431616 in words is "twenty-eight trillion, seven hundred sixty-one billion, seven hundred thirty-one million, four hundred thirty-one thousand, six hundred sixteen".