16136620900 has 27 divisors (see below), whose sum is σ = 35019224121. Its totient is φ = 6454140240.

The previous prime is 16136620849. The next prime is 16136620901. The reversal of 16136620900 is 902663161.

The square root of 16136620900 is 127030.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 5809183524 + 10327437376 = 76218^2 + 101624^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16136620901) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1263949 + ... + 1276651.

Almost surely, 2^16136620900 is an apocalyptic number.

16136620900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16136620900 is the 127030-th square number.

It is an amenable number.

16136620900 is an abundant number, since it is smaller than the sum of its proper divisors (18882603221).

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

16136620900 is an frugal number, since it uses more digits than its factorization.

16136620900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25420 (or 12710 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 34.

Multiplying 16136620900 by its product of nonzero digits (11664), we get a square (188217546177600 = 13719240²).

The spelling of 16136620900 in words is "sixteen billion, one hundred thirty-six million, six hundred twenty thousand, nine hundred".