16557410020 has 12 divisors (see below), whose sum is σ = 34770561084. Its totient is φ = 6622964000.

The previous prime is 16557410003. The next prime is 16557410063. The reversal of 16557410020 is 2001475561.

It can be written as a sum of positive squares in 2 ways, for example, as 5002449984 + 11554960036 = 70728^2 + 107494^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 413935231 + ... + 413935270.

It is an arithmetic number, because the mean of its divisors is an integer number (2897546757).

Almost surely, 2^16557410020 is an apocalyptic number.

16557410020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16557410020 is an abundant number, since it is smaller than the sum of its proper divisors (18213151064).

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

16557410020 is a wasteful number, since it uses less digits than its factorization.

16557410020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 827870510 (or 827870508 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 31.

Adding to 16557410020 its reverse (2001475561), we get a palindrome (18558885581).

The spelling of 16557410020 in words is "sixteen billion, five hundred fifty-seven million, four hundred ten thousand, twenty".