961622986621 has 8 divisors (see below), whose sum is σ = 1049053168800. Its totient is φ = 874194456240.

The previous prime is 961622986601. The next prime is 961622986631. The reversal of 961622986621 is 126689226169.

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

It is a cyclic number.

It is not a de Polignac number, because 961622986621 - 2¹¹ = 961622984573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (961622986601) 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, 1020750 + ... + 1721968.

It is an arithmetic number, because the mean of its divisors is an integer number (131131646100).

Almost surely, 2^961622986621 is an apocalyptic number.

It is an amenable number.

961622986621 is a deficient number, since it is larger than the sum of its proper divisors (87430182179).

961622986621 is a wasteful number, since it uses less digits than its factorization.

961622986621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 825899.

The product of its digits is 6718464, while the sum is 58.

The spelling of 961622986621 in words is "nine hundred sixty-one billion, six hundred twenty-two million, nine hundred eighty-six thousand, six hundred twenty-one".