40501568212691 has 2 divisors, whose sum is σ = 40501568212692. Its totient is φ = 40501568212690.

The previous prime is 40501568212657. The next prime is 40501568212757. The reversal of 40501568212691 is 19621286510504.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40501568212691 - 2³⁴ = 40484388343507 is a prime.

It is a super-2 number, since 2×40501568212691² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40501568212991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20250784106345 + 20250784106346.

It is an arithmetic number, because the mean of its divisors is an integer number (20250784106346).

Almost surely, 2^{40501568212691} is an apocalyptic number.

40501568212691 is a deficient number, since it is larger than the sum of its proper divisors (1).

40501568212691 is an equidigital number, since it uses as much as digits as its factorization.

40501568212691 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1036800, while the sum is 50.

The spelling of 40501568212691 in words is "forty trillion, five hundred one billion, five hundred sixty-eight million, two hundred twelve thousand, six hundred ninety-one".