400234455131520 has 128 divisors (see below), whose sum is σ = 1277567226355680. Its totient is φ = 106576934912000.

The previous prime is 400234455131503. The next prime is 400234455131543. The reversal of 400234455131520 is 25131554432004.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 147338421 + ... + 150030260.

Almost surely, 2^{400234455131520} is an apocalyptic number.

400234455131520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

400234455131520 is an abundant number, since it is smaller than the sum of its proper divisors (877332771224160).

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

400234455131520 is a wasteful number, since it uses less digits than its factorization.

400234455131520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297369404 (or 297369392 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 39.

The spelling of 400234455131520 in words is "four hundred trillion, two hundred thirty-four billion, four hundred fifty-five million, one hundred thirty-one thousand, five hundred twenty".