16358572820 has 24 divisors (see below), whose sum is σ = 34623504384. Its totient is φ = 6491905056.

The previous prime is 16358572819. The next prime is 16358572871. The reversal of 16358572820 is 2827585361.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its 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, 3217652 + ... + 3222731.

It is an arithmetic number, because the mean of its divisors is an integer number (1442646016).

Almost surely, 2^16358572820 is an apocalyptic number.

16358572820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16358572820 is an abundant number, since it is smaller than the sum of its proper divisors (18264931564).

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

16358572820 is a wasteful number, since it uses less digits than its factorization.

16358572820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6440519 (or 6440517 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 47.

The spelling of 16358572820 in words is "sixteen billion, three hundred fifty-eight million, five hundred seventy-two thousand, eight hundred twenty".