15975047631 has 4 divisors (see below), whose sum is σ = 21300063512. Its totient is φ = 10650031752.

The previous prime is 15975047609. The next prime is 15975047633. The reversal of 15975047631 is 13674057951.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 15975047631 - 2¹³ = 15975039439 is a prime.

It is a super-2 number, since 2×15975047631² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15975047633) 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, 2662507936 + ... + 2662507941.

It is an arithmetic number, because the mean of its divisors is an integer number (5325015878).

Almost surely, 2^15975047631 is an apocalyptic number.

15975047631 is a deficient number, since it is larger than the sum of its proper divisors (5325015881).

15975047631 is an equidigital number, since it uses as much as digits as its factorization.

15975047631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5325015880.

The product of its (nonzero) digits is 793800, while the sum is 48.

The spelling of 15975047631 in words is "fifteen billion, nine hundred seventy-five million, forty-seven thousand, six hundred thirty-one".