400164633640435 has 16 divisors (see below), whose sum is σ = 480597563065536. Its totient is φ = 319865046478848.

The previous prime is 400164633640397. The next prime is 400164633640463. The reversal of 400164633640435 is 534046336461004.

It is a cyclic number.

It is not a de Polignac number, because 400164633640435 - 2²¹ = 400164631543283 is a prime.

It is a Duffinian 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, 428666107 + ... + 429598603.

It is an arithmetic number, because the mean of its divisors is an integer number (30037347691596).

Almost surely, 2^{400164633640435} is an apocalyptic number.

400164633640435 is a deficient number, since it is larger than the sum of its proper divisors (80432929425101).

400164633640435 is a wasteful number, since it uses less digits than its factorization.

400164633640435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1003902.

The product of its (nonzero) digits is 7464960, while the sum is 49.

The spelling of 400164633640435 in words is "four hundred trillion, one hundred sixty-four billion, six hundred thirty-three million, six hundred forty thousand, four hundred thirty-five".