15439940530 has 64 divisors (see below), whose sum is σ = 32690253312. Its totient is φ = 5139624960.

The previous prime is 15439940497. The next prime is 15439940557. The reversal of 15439940530 is 3504993451.

It is a happy number.

15439940530 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 1255210 + ... + 1267450.

It is an arithmetic number, because the mean of its divisors is an integer number (510785208).

Almost surely, 2^15439940530 is an apocalyptic number.

15439940530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15439940530 is an abundant number, since it is smaller than the sum of its proper divisors (17250312782).

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

15439940530 is a wasteful number, since it uses less digits than its factorization.

15439940530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12779.

The product of its (nonzero) digits is 291600, while the sum is 43.

The spelling of 15439940530 in words is "fifteen billion, four hundred thirty-nine million, nine hundred forty thousand, five hundred thirty".