402413789025491 has 2 divisors, whose sum is σ = 402413789025492. Its totient is φ = 402413789025490.

The previous prime is 402413789025403. The next prime is 402413789025499. The reversal of 402413789025491 is 194520987314204.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 402413789025491 - 2⁴⁶ = 332045044847827 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 402413789025491.

It is not a weakly prime, because it can be changed into another prime (402413789025499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201206894512745 + 201206894512746.

It is an arithmetic number, because the mean of its divisors is an integer number (201206894512746).

Almost surely, 2^{402413789025491} is an apocalyptic number.

402413789025491 is a deficient number, since it is larger than the sum of its proper divisors (1).

402413789025491 is an equidigital number, since it uses as much as digits as its factorization.

402413789025491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17418240, while the sum is 59.

The spelling of 402413789025491 in words is "four hundred two trillion, four hundred thirteen billion, seven hundred eighty-nine million, twenty-five thousand, four hundred ninety-one".