402165530665 has 8 divisors (see below), whose sum is σ = 503581186368. Its totient is φ = 307744058160.

The previous prime is 402165530647. The next prime is 402165530687. The reversal of 402165530665 is 566035561204.

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

It is not a de Polignac number, because 402165530665 - 2⁹ = 402165530153 is a prime.

It is a super-2 number, since 2×402165530665² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1748545671 + ... + 1748545900.

It is an arithmetic number, because the mean of its divisors is an integer number (62947648296).

Almost surely, 2^402165530665 is an apocalyptic number.

It is an amenable number.

402165530665 is a deficient number, since it is larger than the sum of its proper divisors (101415655703).

402165530665 is a wasteful number, since it uses less digits than its factorization.

402165530665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3497091599.

The product of its (nonzero) digits is 648000, while the sum is 43.

The spelling of 402165530665 in words is "four hundred two billion, one hundred sixty-five million, five hundred thirty thousand, six hundred sixty-five".