406400611645 has 32 divisors (see below), whose sum is σ = 570403012608. Its totient is φ = 272149996608.

The previous prime is 406400611637. The next prime is 406400611651. The reversal of 406400611645 is 546116004604.

It is not a de Polignac number, because 406400611645 - 2³ = 406400611637 is a prime.

It is a super-2 number, since 2×406400611645² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11249902 + ... + 11285968.

It is an arithmetic number, because the mean of its divisors is an integer number (17825094144).

Almost surely, 2^406400611645 is an apocalyptic number.

It is an amenable number.

406400611645 is a deficient number, since it is larger than the sum of its proper divisors (164002400963).

406400611645 is a wasteful number, since it uses less digits than its factorization.

406400611645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43609.

The product of its (nonzero) digits is 69120, while the sum is 37.

The spelling of 406400611645 in words is "four hundred six billion, four hundred million, six hundred eleven thousand, six hundred forty-five".