400460662455646 has 16 divisors (see below), whose sum is σ = 667765670398848. Its totient is φ = 178865804570400.

The previous prime is 400460662455619. The next prime is 400460662455703. The reversal of 400460662455646 is 646554266064004.

It is a congruent 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, 248424727765 + ... + 248424729376.

It is an arithmetic number, because the mean of its divisors is an integer number (41735354399928).

Almost surely, 2^{400460662455646} is an apocalyptic number.

400460662455646 is a deficient number, since it is larger than the sum of its proper divisors (267305007943202).

400460662455646 is a wasteful number, since it uses less digits than its factorization.

400460662455646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 496849457187.

The product of its (nonzero) digits is 99532800, while the sum is 58.

The spelling of 400460662455646 in words is "four hundred trillion, four hundred sixty billion, six hundred sixty-two million, four hundred fifty-five thousand, six hundred forty-six".