16520441440 has 48 divisors (see below), whose sum is σ = 39327528240. Its totient is φ = 6557724160.

The previous prime is 16520441411. The next prime is 16520441453. The reversal of 16520441440 is 4414402561.

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, 373135 + ... + 415054.

It is an arithmetic number, because the mean of its divisors is an integer number (819323505).

Almost surely, 2^16520441440 is an apocalyptic number.

16520441440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16520441440 is an abundant number, since it is smaller than the sum of its proper divisors (22807086800).

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

16520441440 is a wasteful number, since it uses less digits than its factorization.

16520441440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 788335 (or 788327 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 31.

The spelling of 16520441440 in words is "sixteen billion, five hundred twenty million, four hundred forty-one thousand, four hundred forty".