400765422426 has 16 divisors (see below), whose sum is σ = 801567140544. Its totient is φ = 133582424864.

The previous prime is 400765422403. The next prime is 400765422427. The reversal of 400765422426 is 624224567004.

It is a super-2 number, since 2×400765422426² (a number of 24 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (400765422427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1367715 + ... + 1634678.

It is an arithmetic number, because the mean of its divisors is an integer number (50097946284).

Almost surely, 2^400765422426 is an apocalyptic number.

400765422426 is an abundant number, since it is smaller than the sum of its proper divisors (400801718118).

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

400765422426 is a wasteful number, since it uses less digits than its factorization.

400765422426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3024645.

The product of its (nonzero) digits is 645120, while the sum is 42.

The spelling of 400765422426 in words is "four hundred billion, seven hundred sixty-five million, four hundred twenty-two thousand, four hundred twenty-six".