402052161664623 has 12 divisors (see below), whose sum is σ = 549463315135304. Its totient is φ = 261497340916800.

The previous prime is 402052161664607. The next prime is 402052161664639. The reversal of 402052161664623 is 326466161250204.

It is an interprime number because it is at equal distance from previous prime (402052161664607) and next prime (402052161664639).

It is not a de Polignac number, because 402052161664623 - 2⁴ = 402052161664607 is a prime.

It is a super-2 number, since 2×402052161664623² (a number of 30 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 (402052161669623) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39862394488 + ... + 39862404573.

Almost surely, 2^{402052161664623} is an apocalyptic number.

402052161664623 is a deficient number, since it is larger than the sum of its proper divisors (147411153470681).

402052161664623 is an equidigital number, since it uses as much as digits as its factorization.

402052161664623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79724799146 (or 79724799105 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 48.

The spelling of 402052161664623 in words is "four hundred two trillion, fifty-two billion, one hundred sixty-one million, six hundred sixty-four thousand, six hundred twenty-three".