16640570650 has 24 divisors (see below), whose sum is σ = 33765231744. Its totient is φ = 6051116400.

The previous prime is 16640570629. The next prime is 16640570659. The reversal of 16640570650 is 5607504661.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (16640570659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15127242 + ... + 15128341.

It is an arithmetic number, because the mean of its divisors is an integer number (1406884656).

Almost surely, 2^16640570650 is an apocalyptic number.

16640570650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16640570650 is an abundant number, since it is smaller than the sum of its proper divisors (17124661094).

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

16640570650 is a wasteful number, since it uses less digits than its factorization.

16640570650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30255606 (or 30255601 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 40.

The spelling of 16640570650 in words is "sixteen billion, six hundred forty million, five hundred seventy thousand, six hundred fifty".