40456551449 has 2 divisors, whose sum is σ = 40456551450. Its totient is φ = 40456551448.

The previous prime is 40456551407. The next prime is 40456551467. The reversal of 40456551449 is 94415565404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39932828224 + 523723225 = 199832^2 + 22885^2 .

It is a cyclic number.

It is not a de Polignac number, because 40456551449 - 2²⁰ = 40455502873 is a prime.

It is not a weakly prime, because it can be changed into another prime (40456551469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20228275724 + 20228275725.

It is an arithmetic number, because the mean of its divisors is an integer number (20228275725).

Almost surely, 2^40456551449 is an apocalyptic number.

It is an amenable number.

40456551449 is a deficient number, since it is larger than the sum of its proper divisors (1).

40456551449 is an equidigital number, since it uses as much as digits as its factorization.

40456551449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728000, while the sum is 47.

The spelling of 40456551449 in words is "forty billion, four hundred fifty-six million, five hundred fifty-one thousand, four hundred forty-nine".