956991713869 has 4 divisors (see below), whose sum is σ = 977353239744. Its totient is φ = 936630187996.

The previous prime is 956991713831. The next prime is 956991713959. The reversal of 956991713869 is 968317199659.

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, and also an emirpimes, since its reverse is a distinct semiprime: 968317199659 = 193 ⋅5017187563.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-956991713869 is a prime.

It is a super-2 number, since 2×956991713869² (a number of 25 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 (956991714869) 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, 10180762867 + ... + 10180762960.

It is an arithmetic number, because the mean of its divisors is an integer number (244338309936).

Almost surely, 2^956991713869 is an apocalyptic number.

It is an amenable number.

956991713869 is a deficient number, since it is larger than the sum of its proper divisors (20361525875).

956991713869 is a wasteful number, since it uses less digits than its factorization.

956991713869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20361525874.

The product of its digits is 198404640, while the sum is 73.

The spelling of 956991713869 in words is "nine hundred fifty-six billion, nine hundred ninety-one million, seven hundred thirteen thousand, eight hundred sixty-nine".