3921136432663 has 2 divisors, whose sum is σ = 3921136432664. Its totient is φ = 3921136432662.

The previous prime is 3921136432613. The next prime is 3921136432727. The reversal of 3921136432663 is 3662346311293.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3921136432663 - 2²¹ = 3921134335511 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3921136432613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1960568216331 + 1960568216332.

It is an arithmetic number, because the mean of its divisors is an integer number (1960568216332).

Almost surely, 2^{3921136432663} is an apocalyptic number.

3921136432663 is a deficient number, since it is larger than the sum of its proper divisors (1).

3921136432663 is an equidigital number, since it uses as much as digits as its factorization.

3921136432663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2519424, while the sum is 49.

The spelling of 3921136432663 in words is "three trillion, nine hundred twenty-one billion, one hundred thirty-six million, four hundred thirty-two thousand, six hundred sixty-three".