15963948539 has 12 divisors (see below), whose sum is σ = 20053886832. Its totient is φ = 12439439760.

The previous prime is 15963948527. The next prime is 15963948547. The reversal of 15963948539 is 93584936951.

It is not a de Polignac number, because 15963948539 - 2⁸ = 15963948283 is a prime.

It is not an unprimeable number, because it can be changed into a prime (15963948569) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9422972 + ... + 9424665.

It is an arithmetic number, because the mean of its divisors is an integer number (1671157236).

Almost surely, 2^15963948539 is an apocalyptic number.

15963948539 is a deficient number, since it is larger than the sum of its proper divisors (4089938293).

15963948539 is a wasteful number, since it uses less digits than its factorization.

15963948539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18847666 (or 18847655 counting only the distinct ones).

The product of its digits is 31492800, while the sum is 62.

The spelling of 15963948539 in words is "fifteen billion, nine hundred sixty-three million, nine hundred forty-eight thousand, five hundred thirty-nine".