28161790519080 has 64 divisors (see below), whose sum is σ = 85150610749440. Its totient is φ = 7450678432512.

The previous prime is 28161790519067. The next prime is 28161790519097. The reversal of 28161790519080 is 8091509716182.

It is a self number, because there is not a number n which added to its sum of digits gives 28161790519080.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 923928019 + ... + 923958498.

It is an arithmetic number, because the mean of its divisors is an integer number (1330478292960).

Almost surely, 2^{28161790519080} is an apocalyptic number.

28161790519080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28161790519080 is an abundant number, since it is smaller than the sum of its proper divisors (56988820230360).

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

28161790519080 is a wasteful number, since it uses less digits than its factorization.

28161790519080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1847886658 (or 1847886654 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 57.

The spelling of 28161790519080 in words is "twenty-eight trillion, one hundred sixty-one billion, seven hundred ninety million, five hundred nineteen thousand, eighty".