405672255165 has 32 divisors (see below), whose sum is σ = 664507152000. Its totient is φ = 211263914240.

The previous prime is 405672255143. The next prime is 405672255169. The reversal of 405672255165 is 561552276504.

It is not a de Polignac number, because 405672255165 - 2¹⁷ = 405672124093 is a prime.

It is a super-2 number, since 2×405672255165² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405672255169) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1406346 + ... + 1670075.

It is an arithmetic number, because the mean of its divisors is an integer number (20765848500).

Almost surely, 2^405672255165 is an apocalyptic number.

It is an amenable number.

405672255165 is a deficient number, since it is larger than the sum of its proper divisors (258834896835).

405672255165 is a wasteful number, since it uses less digits than its factorization.

405672255165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3076637.

The product of its (nonzero) digits is 2520000, while the sum is 48.

The spelling of 405672255165 in words is "four hundred five billion, six hundred seventy-two million, two hundred fifty-five thousand, one hundred sixty-five".