890577815856 has 80 divisors (see below), whose sum is σ = 2427500106240. Its totient is φ = 280566961920.

The previous prime is 890577815851. The next prime is 890577815867. The reversal of 890577815856 is 658518775098.

It is not an unprimeable number, because it can be changed into a prime (890577815851) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 775800 + ... + 1543703.

It is an arithmetic number, because the mean of its divisors is an integer number (30343751328).

Almost surely, 2^890577815856 is an apocalyptic number.

It is an amenable number.

890577815856 is an abundant number, since it is smaller than the sum of its proper divisors (1536922290384).

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

890577815856 is a wasteful number, since it uses less digits than its factorization.

890577815856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2319954 (or 2319948 counting only the distinct ones).

The product of its (nonzero) digits is 169344000, while the sum is 69.

The spelling of 890577815856 in words is "eight hundred ninety billion, five hundred seventy-seven million, eight hundred fifteen thousand, eight hundred fifty-six".