85780205880 has 32 divisors (see below), whose sum is σ = 257340618000. Its totient is φ = 22874721536.

The previous prime is 85780205873. The next prime is 85780205897. The reversal of 85780205880 is 8850208758.

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

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, 357417405 + ... + 357417644.

Almost surely, 2^85780205880 is an apocalyptic number.

It is an amenable number.

85780205880 is an abundant number, since it is smaller than the sum of its proper divisors (171560412120).

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

85780205880 is a wasteful number, since it uses less digits than its factorization.

85780205880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 714835063 (or 714835059 counting only the distinct ones).

The product of its (nonzero) digits is 1433600, while the sum is 51.

The spelling of 85780205880 in words is "eighty-five billion, seven hundred eighty million, two hundred five thousand, eight hundred eighty".