15670701961 has 4 divisors (see below), whose sum is σ = 15696864000. Its totient is φ = 15644539924.

The previous prime is 15670701929. The next prime is 15670701973. The reversal of 15670701961 is 16910707651.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 15670701961 - 2⁵ = 15670701929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15670701161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13080121 + ... + 13081318.

It is an arithmetic number, because the mean of its divisors is an integer number (3924216000).

Almost surely, 2^15670701961 is an apocalyptic number.

It is an amenable number.

15670701961 is a deficient number, since it is larger than the sum of its proper divisors (26162039).

15670701961 is an equidigital number, since it uses as much as digits as its factorization.

15670701961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26162038.

The product of its (nonzero) digits is 79380, while the sum is 43.

The spelling of 15670701961 in words is "fifteen billion, six hundred seventy million, seven hundred one thousand, nine hundred sixty-one".