402748912991 has 2 divisors, whose sum is σ = 402748912992. Its totient is φ = 402748912990.

The previous prime is 402748912901. The next prime is 402748913041. The reversal of 402748912991 is 199219847204.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-402748912991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402748912901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201374456495 + 201374456496.

It is an arithmetic number, because the mean of its divisors is an integer number (201374456496).

Almost surely, 2^402748912991 is an apocalyptic number.

402748912991 is a deficient number, since it is larger than the sum of its proper divisors (1).

402748912991 is an equidigital number, since it uses as much as digits as its factorization.

402748912991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2612736, while the sum is 56.

The spelling of 402748912991 in words is "four hundred two billion, seven hundred forty-eight million, nine hundred twelve thousand, nine hundred ninety-one".