40332626721 has 12 divisors (see below), whose sum is σ = 59357451348. Its totient is φ = 26381088864.

The previous prime is 40332626707. The next prime is 40332626743. The reversal of 40332626721 is 12762623304.

40332626721 is a `hidden beast` number, since 4 + 0 + 3 + 3 + 2 + 626 + 7 + 21 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 26158533696 + 14174093025 = 161736^2 + 119055^2 .

It is not a de Polignac number, because 40332626721 - 2⁵ = 40332626689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40332626221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42276910 + ... + 42277863.

It is an arithmetic number, because the mean of its divisors is an integer number (4946454279).

Almost surely, 2^40332626721 is an apocalyptic number.

It is an amenable number.

40332626721 is a deficient number, since it is larger than the sum of its proper divisors (19024824627).

40332626721 is a wasteful number, since it uses less digits than its factorization.

40332626721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84554832 (or 84554829 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 36.

The spelling of 40332626721 in words is "forty billion, three hundred thirty-two million, six hundred twenty-six thousand, seven hundred twenty-one".