40026861504089 has 2 divisors, whose sum is σ = 40026861504090. Its totient is φ = 40026861504088.

The previous prime is 40026861503989. The next prime is 40026861504103. The reversal of 40026861504089 is 98040516862004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22375813774864 + 17651047729225 = 4730308^2 + 4201315^2 .

It is a cyclic number.

It is not a de Polignac number, because 40026861504089 - 2²⁸ = 40026593068633 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 40026861504089.

It is not a weakly prime, because it can be changed into another prime (40026861504989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20013430752044 + 20013430752045.

It is an arithmetic number, because the mean of its divisors is an integer number (20013430752045).

Almost surely, 2^{40026861504089} is an apocalyptic number.

It is an amenable number.

40026861504089 is a deficient number, since it is larger than the sum of its proper divisors (1).

40026861504089 is an equidigital number, since it uses as much as digits as its factorization.

40026861504089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3317760, while the sum is 53.

The spelling of 40026861504089 in words is "forty trillion, twenty-six billion, eight hundred sixty-one million, five hundred four thousand, eighty-nine".