9479564455621 has 16 divisors (see below), whose sum is σ = 10213724989440. Its totient is φ = 8746113807360.

The previous prime is 9479564455619. The next prime is 9479564455633. The reversal of 9479564455621 is 1265544659749.

It is a cyclic number.

It is not a de Polignac number, because 9479564455621 - 2¹ = 9479564455619 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 (9479564455651) 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, 580883100 + ... + 580899418.

It is an arithmetic number, because the mean of its divisors is an integer number (638357811840).

Almost surely, 2^{9479564455621} is an apocalyptic number.

It is an amenable number.

9479564455621 is a deficient number, since it is larger than the sum of its proper divisors (734160533819).

9479564455621 is a wasteful number, since it uses less digits than its factorization.

9479564455621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35316.

The product of its digits is 326592000, while the sum is 67.

The spelling of 9479564455621 in words is "nine trillion, four hundred seventy-nine billion, five hundred sixty-four million, four hundred fifty-five thousand, six hundred twenty-one".