9621623654963 has 16 divisors (see below), whose sum is σ = 9651753064800. Its totient is φ = 9591552748800.

The previous prime is 9621623654927. The next prime is 9621623655011. The reversal of 9621623654963 is 3694563261269.

It is a cyclic number.

It is not a de Polignac number, because 9621623654963 - 2²⁴ = 9621606877747 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9621623654896 and 9621623654905.

It is not an unprimeable number, because it can be changed into a prime (9621623651963) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1508324708 + ... + 1508331086.

It is an arithmetic number, because the mean of its divisors is an integer number (603234566550).

Almost surely, 2^{9621623654963} is an apocalyptic number.

9621623654963 is a deficient number, since it is larger than the sum of its proper divisors (30129409837).

9621623654963 is a wasteful number, since it uses less digits than its factorization.

9621623654963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10262.

The product of its digits is 75582720, while the sum is 62.

The spelling of 9621623654963 in words is "nine trillion, six hundred twenty-one billion, six hundred twenty-three million, six hundred fifty-four thousand, nine hundred sixty-three".