40166552665051 has 2 divisors, whose sum is σ = 40166552665052. Its totient is φ = 40166552665050.

The previous prime is 40166552665021. The next prime is 40166552665231. The reversal of 40166552665051 is 15056625566104.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40166552665051 - 2¹⁹ = 40166552140763 is a prime.

It is a super-2 number, since 2×40166552665051² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40166552665051.

It is not a weakly prime, because it can be changed into another prime (40166552665021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20083276332525 + 20083276332526.

It is an arithmetic number, because the mean of its divisors is an integer number (20083276332526).

Almost surely, 2^{40166552665051} is an apocalyptic number.

40166552665051 is a deficient number, since it is larger than the sum of its proper divisors (1).

40166552665051 is an equidigital number, since it uses as much as digits as its factorization.

40166552665051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480000, while the sum is 52.

The spelling of 40166552665051 in words is "forty trillion, one hundred sixty-six billion, five hundred fifty-two million, six hundred sixty-five thousand, fifty-one".