40642166363 has 2 divisors, whose sum is σ = 40642166364. Its totient is φ = 40642166362.

The previous prime is 40642166359. The next prime is 40642166371. The reversal of 40642166363 is 36366124604.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40642166363 - 2² = 40642166359 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40642166363.

It is not a weakly prime, because it can be changed into another prime (40642166303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20321083181 + 20321083182.

It is an arithmetic number, because the mean of its divisors is an integer number (20321083182).

Almost surely, 2^40642166363 is an apocalyptic number.

40642166363 is a deficient number, since it is larger than the sum of its proper divisors (1).

40642166363 is an equidigital number, since it uses as much as digits as its factorization.

40642166363 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 373248, while the sum is 41.

The spelling of 40642166363 in words is "forty billion, six hundred forty-two million, one hundred sixty-six thousand, three hundred sixty-three".