40431049256 has 24 divisors (see below), whose sum is σ = 81643759470. Its totient is φ = 18659537856.

The previous prime is 40431049249. The next prime is 40431049271. The reversal of 40431049256 is 65294013404.

It can be written as a sum of positive squares in 3 ways, for example, as 7644704356 + 32786344900 = 87434^2 + 181070^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2040710 + ... + 2060426.

Almost surely, 2^40431049256 is an apocalyptic number.

It is an amenable number.

40431049256 is an abundant number, since it is smaller than the sum of its proper divisors (41212710214).

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

40431049256 is an frugal number, since it uses more digits than its factorization.

40431049256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39453 (or 19732 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 38.

The spelling of 40431049256 in words is "forty billion, four hundred thirty-one million, forty-nine thousand, two hundred fifty-six".