40166302500557 has 2 divisors, whose sum is σ = 40166302500558. Its totient is φ = 40166302500556.

The previous prime is 40166302500523. The next prime is 40166302500563. The reversal of 40166302500557 is 75500520366104.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20184991258441 + 19981311242116 = 4492771^2 + 4470046^2 .

It is a cyclic number.

It is not a de Polignac number, because 40166302500557 - 2³⁶ = 40097583023821 is a prime.

It is a super-2 number, since 2×40166302500557² (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 (40166302500757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20083151250278 + 20083151250279.

It is an arithmetic number, because the mean of its divisors is an integer number (20083151250279).

Almost surely, 2^{40166302500557} is an apocalyptic number.

It is an amenable number.

40166302500557 is a deficient number, since it is larger than the sum of its proper divisors (1).

40166302500557 is an equidigital number, since it uses as much as digits as its factorization.

40166302500557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 756000, while the sum is 44.

The spelling of 40166302500557 in words is "forty trillion, one hundred sixty-six billion, three hundred two million, five hundred thousand, five hundred fifty-seven".