15642479500 has 24 divisors (see below), whose sum is σ = 34163176320. Its totient is φ = 6256991600.

The previous prime is 15642479497. The next prime is 15642479509. The reversal of 15642479500 is 597424651.

15642479500 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (15642479509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15641980 + ... + 15642979.

It is an arithmetic number, because the mean of its divisors is an integer number (1423465680).

Almost surely, 2^15642479500 is an apocalyptic number.

15642479500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15642479500 is an abundant number, since it is smaller than the sum of its proper divisors (18520696820).

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

15642479500 is a wasteful number, since it uses less digits than its factorization.

15642479500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31284978 (or 31284966 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 43.

The spelling of 15642479500 in words is "fifteen billion, six hundred forty-two million, four hundred seventy-nine thousand, five hundred".