85575791081980 has 24 divisors (see below), whose sum is σ = 179756842290480. Its totient is φ = 34221234334080.

The previous prime is 85575791081923. The next prime is 85575791082007. The reversal of 85575791081980 is 8918019757558.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 567553906 + ... + 567704665.

It is an arithmetic number, because the mean of its divisors is an integer number (7489868428770).

Almost surely, 2^{85575791081980} is an apocalyptic number.

It is an amenable number.

85575791081980 is an abundant number, since it is smaller than the sum of its proper divisors (94181051208500).

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

85575791081980 is a wasteful number, since it uses less digits than its factorization.

85575791081980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1135262349 (or 1135262347 counting only the distinct ones).

The product of its (nonzero) digits is 254016000, while the sum is 73.

The spelling of 85575791081980 in words is "eighty-five trillion, five hundred seventy-five billion, seven hundred ninety-one million, eighty-one thousand, nine hundred eighty".