400331122040400 has 60 divisors (see below), whose sum is σ = 1282394027606592. Its totient is φ = 106754965877120.

The previous prime is 400331122040351. The next prime is 400331122040407. The reversal of 400331122040400 is 4040221133004.

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400331122040407) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 166804632984 + ... + 166804635383.

Almost surely, 2^{400331122040400} is an apocalyptic number.

400331122040400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

400331122040400 is an abundant number, since it is smaller than the sum of its proper divisors (882062905566192).

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

400331122040400 is a wasteful number, since it uses less digits than its factorization.

400331122040400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333609268388 (or 333609268377 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 400331122040400 its reverse (4040221133004), we get a palindrome (404371343173404).

The spelling of 400331122040400 in words is "four hundred trillion, three hundred thirty-one billion, one hundred twenty-two million, forty thousand, four hundred".