400343374100 has 72 divisors (see below), whose sum is σ = 915375683040. Its totient is φ = 151558577280.

The previous prime is 400343374061. The next prime is 400343374117. The reversal of 400343374100 is 1473343004.

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, 1820699 + ... + 2028701.

Almost surely, 2^400343374100 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 400343374100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (457687841520).

400343374100 is an abundant number, since it is smaller than the sum of its proper divisors (515032308940).

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

400343374100 is a wasteful number, since it uses less digits than its factorization.

400343374100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209049 (or 209042 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 29.

The spelling of 400343374100 in words is "four hundred billion, three hundred forty-three million, three hundred seventy-four thousand, one hundred".