961657966997 has 8 divisors (see below), whose sum is σ = 1183579036416. Its totient is φ = 760872237552.

The previous prime is 961657966991. The next prime is 961657967021. The reversal of 961657966997 is 799669756169.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 961657966997 - 2¹² = 961657962901 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (961657966991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5283834893 + ... + 5283835074.

It is an arithmetic number, because the mean of its divisors is an integer number (147947379552).

Almost surely, 2^961657966997 is an apocalyptic number.

It is an amenable number.

961657966997 is a deficient number, since it is larger than the sum of its proper divisors (221921069419).

961657966997 is a wasteful number, since it uses less digits than its factorization.

961657966997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10567669987.

The product of its digits is 2083248720, while the sum is 80.

The spelling of 961657966997 in words is "nine hundred sixty-one billion, six hundred fifty-seven million, nine hundred sixty-six thousand, nine hundred ninety-seven".