40166552665231 has 2 divisors, whose sum is σ = 40166552665232. Its totient is φ = 40166552665230.

The previous prime is 40166552665051. The next prime is 40166552665237. The reversal of 40166552665231 is 13256625566104.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40166552665231 - 2¹³ = 40166552657039 is a prime.

It is a super-2 number, since 2×40166552665231² (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 (40166552665237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20083276332615 + 20083276332616.

It is an arithmetic number, because the mean of its divisors is an integer number (20083276332616).

Almost surely, 2^{40166552665231} is an apocalyptic number.

40166552665231 is a deficient number, since it is larger than the sum of its proper divisors (1).

40166552665231 is an equidigital number, since it uses as much as digits as its factorization.

40166552665231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776000, while the sum is 52.

The spelling of 40166552665231 in words is "forty trillion, one hundred sixty-six billion, five hundred fifty-two million, six hundred sixty-five thousand, two hundred thirty-one".