400356436363644 has 48 divisors (see below), whose sum is σ = 974826281721600. Its totient is φ = 127643933915520.

The previous prime is 400356436363589. The next prime is 400356436363673. The reversal of 400356436363644 is 446363634653004.

It is a super-2 number, since 2×400356436363644² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27835194 + ... + 39692705.

It is an arithmetic number, because the mean of its divisors is an integer number (20308880869200).

Almost surely, 2^{400356436363644} is an apocalyptic number.

It is an amenable number.

400356436363644 is an abundant number, since it is smaller than the sum of its proper divisors (574469845357956).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

400356436363644 is a wasteful number, since it uses less digits than its factorization.

400356436363644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67549410 (or 67549408 counting only the distinct ones).

The product of its (nonzero) digits is 134369280, while the sum is 57.

The spelling of 400356436363644 in words is "four hundred trillion, three hundred fifty-six billion, four hundred thirty-six million, three hundred sixty-three thousand, six hundred forty-four".