15991240316 has 12 divisors (see below), whose sum is σ = 28080183432. Its totient is φ = 7968330768.

The previous prime is 15991240267. The next prime is 15991240319. The reversal of 15991240316 is 61304219951.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15991240319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6821030 + ... + 6823373.

It is an arithmetic number, because the mean of its divisors is an integer number (2340015286).

Almost surely, 2^15991240316 is an apocalyptic number.

It is an amenable number.

15991240316 is a deficient number, since it is larger than the sum of its proper divisors (12088943116).

15991240316 is a wasteful number, since it uses less digits than its factorization.

15991240316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13644700 (or 13644698 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 41.

The spelling of 15991240316 in words is "fifteen billion, nine hundred ninety-one million, two hundred forty thousand, three hundred sixteen".