40407266432 has 64 divisors (see below), whose sum is σ = 86845462200. Its totient is φ = 18616295424.

The previous prime is 40407266423. The next prime is 40407266447. The reversal of 40407266432 is 23466270404.

It can be written as a sum of positive squares in 4 ways, for example, as 22444833856 + 17962432576 = 149816^2 + 134024^2 .

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 925478 + ... + 968154.

Almost surely, 2^40407266432 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 40407266432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43422731100).

40407266432 is an abundant number, since it is smaller than the sum of its proper divisors (46438195768).

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

40407266432 is a wasteful number, since it uses less digits than its factorization.

40407266432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43273 (or 43261 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 38.

The spelling of 40407266432 in words is "forty billion, four hundred seven million, two hundred sixty-six thousand, four hundred thirty-two".