40292661321 has 18 divisors (see below), whose sum is σ = 63972464010. Its totient is φ = 24419794080.

The previous prime is 40292661289. The next prime is 40292661323. The reversal of 40292661321 is 12316629204.

It is a happy number.

40292661321 is a `hidden beast` number, since 40 + 292 + 6 + 6 + 1 + 321 = 666.

It can be written as a sum of positive squares in only one way, i.e., 33664910400 + 6627750921 = 183480^2 + 81411^2 .

It is not a de Polignac number, because 40292661321 - 2⁵ = 40292661289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40292661323) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 18498756 + ... + 18500933.

Almost surely, 2^40292661321 is an apocalyptic number.

It is an amenable number.

40292661321 is a deficient number, since it is larger than the sum of its proper divisors (23679802689).

40292661321 is a wasteful number, since it uses less digits than its factorization.

40292661321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36999717 (or 36999703 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The spelling of 40292661321 in words is "forty billion, two hundred ninety-two million, six hundred sixty-one thousand, three hundred twenty-one".