40344504451 has 2 divisors, whose sum is σ = 40344504452. Its totient is φ = 40344504450.

The previous prime is 40344504443. The next prime is 40344504457. The reversal of 40344504451 is 15440544304.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40344504451 - 2³ = 40344504443 is a prime.

It is a super-2 number, since 2×40344504451² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40344504457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20172252225 + 20172252226.

It is an arithmetic number, because the mean of its divisors is an integer number (20172252226).

Almost surely, 2^40344504451 is an apocalyptic number.

40344504451 is a deficient number, since it is larger than the sum of its proper divisors (1).

40344504451 is an equidigital number, since it uses as much as digits as its factorization.

40344504451 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 76800, while the sum is 34.

The spelling of 40344504451 in words is "forty billion, three hundred forty-four million, five hundred four thousand, four hundred fifty-one".