40402412444431 has 2 divisors, whose sum is σ = 40402412444432. Its totient is φ = 40402412444430.

The previous prime is 40402412444419. The next prime is 40402412444479. The reversal of 40402412444431 is 13444421420404.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40402412444431 - 2³⁹ = 39852656630543 is a prime.

It is a super-2 number, since 2×40402412444431² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40402412444131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20201206222215 + 20201206222216.

It is an arithmetic number, because the mean of its divisors is an integer number (20201206222216).

Almost surely, 2^{40402412444431} is an apocalyptic number.

40402412444431 is a deficient number, since it is larger than the sum of its proper divisors (1).

40402412444431 is an equidigital number, since it uses as much as digits as its factorization.

40402412444431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 196608, while the sum is 37.

Adding to 40402412444431 its reverse (13444421420404), we get a palindrome (53846833864835).

The spelling of 40402412444431 in words is "forty trillion, four hundred two billion, four hundred twelve million, four hundred forty-four thousand, four hundred thirty-one".