40331021020400 has 120 divisors (see below), whose sum is σ = 111921818647824. Its totient is φ = 13803130163200.

The previous prime is 40331021020369. The next prime is 40331021020483. The reversal of 40331021020400 is 402012013304.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 269517587 + ... + 269667186.

Almost surely, 2^{40331021020400} is an apocalyptic number.

40331021020400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40331021020400 is an abundant number, since it is smaller than the sum of its proper divisors (71590797627424).

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

40331021020400 is a wasteful number, since it uses less digits than its factorization.

40331021020400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539184819 (or 539184808 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 40331021020400 its reverse (402012013304), we get a palindrome (40733033033704).

The spelling of 40331021020400 in words is "forty trillion, three hundred thirty-one billion, twenty-one million, twenty thousand, four hundred".