400310055505320 has 128 divisors (see below), whose sum is σ = 1206119584051200. Its totient is φ = 106288543954944.

The previous prime is 400310055505313. The next prime is 400310055505489. The reversal of 400310055505320 is 23505550013004.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 49953084 + ... + 57410196.

It is an arithmetic number, because the mean of its divisors is an integer number (9422809250400).

Almost surely, 2^{400310055505320} is an apocalyptic number.

400310055505320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 400310055505320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (603059792025600).

400310055505320 is an abundant number, since it is smaller than the sum of its proper divisors (805809528545880).

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

400310055505320 is a wasteful number, since it uses less digits than its factorization.

400310055505320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7459059 (or 7459055 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 33.

The spelling of 400310055505320 in words is "four hundred trillion, three hundred ten billion, fifty-five million, five hundred five thousand, three hundred twenty".