40986535522021 has 2 divisors, whose sum is σ = 40986535522022. Its totient is φ = 40986535522020.

The previous prime is 40986535521959. The next prime is 40986535522099. The reversal of 40986535522021 is 12022553568904.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21258600597025 + 19727934924996 = 4610705^2 + 4441614^2 .

It is a cyclic number.

It is not a de Polignac number, because 40986535522021 - 2⁹ = 40986535521509 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40986535522021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40986535529021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20493267761010 + 20493267761011.

It is an arithmetic number, because the mean of its divisors is an integer number (20493267761011).

Almost surely, 2^{40986535522021} is an apocalyptic number.

It is an amenable number.

40986535522021 is a deficient number, since it is larger than the sum of its proper divisors (1).

40986535522021 is an equidigital number, since it uses as much as digits as its factorization.

40986535522021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184000, while the sum is 52.

The spelling of 40986535522021 in words is "forty trillion, nine hundred eighty-six billion, five hundred thirty-five million, five hundred twenty-two thousand, twenty-one".