857776151980 has 48 divisors (see below), whose sum is σ = 1965162687264. Its totient is φ = 311906616320.

The previous prime is 857776151927. The next prime is 857776152011. The reversal of 857776151980 is 89151677758.

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, 7319124 + ... + 7435396.

It is an arithmetic number, because the mean of its divisors is an integer number (40940889318).

Almost surely, 2^857776151980 is an apocalyptic number.

It is an amenable number.

857776151980 is an abundant number, since it is smaller than the sum of its proper divisors (1107386535284).

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

857776151980 is a wasteful number, since it uses less digits than its factorization.

857776151980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149826 (or 149824 counting only the distinct ones).

The product of its (nonzero) digits is 29635200, while the sum is 64.

The spelling of 857776151980 in words is "eight hundred fifty-seven billion, seven hundred seventy-six million, one hundred fifty-one thousand, nine hundred eighty".