400920770832 has 80 divisors (see below), whose sum is σ = 1038705423360. Its totient is φ = 133254481536.

The previous prime is 400920770813. The next prime is 400920770837. The reversal of 400920770832 is 238077029004.

It is not an unprimeable number, because it can be changed into a prime (400920770837) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30826443 + ... + 30839445.

It is an arithmetic number, because the mean of its divisors is an integer number (12983817792).

Almost surely, 2^400920770832 is an apocalyptic number.

It is an amenable number.

400920770832 is an abundant number, since it is smaller than the sum of its proper divisors (637784652528).

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

400920770832 is a wasteful number, since it uses less digits than its factorization.

400920770832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14820 (or 14814 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 42.

Adding to 400920770832 its reverse (238077029004), we get a palindrome (638997799836).

The spelling of 400920770832 in words is "four hundred billion, nine hundred twenty million, seven hundred seventy thousand, eight hundred thirty-two".