9823425002491 has 2 divisors, whose sum is σ = 9823425002492. Its totient is φ = 9823425002490.

The previous prime is 9823425002483. The next prime is 9823425002527. The reversal of 9823425002491 is 1942005243289.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9823425002491 - 2³ = 9823425002483 is a prime.

It is not a weakly prime, because it can be changed into another prime (9823425002411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4911712501245 + 4911712501246.

It is an arithmetic number, because the mean of its divisors is an integer number (4911712501246).

Almost surely, 2^{9823425002491} is an apocalyptic number.

9823425002491 is a deficient number, since it is larger than the sum of its proper divisors (1).

9823425002491 is an equidigital number, since it uses as much as digits as its factorization.

9823425002491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1244160, while the sum is 49.

The spelling of 9823425002491 in words is "nine trillion, eight hundred twenty-three billion, four hundred twenty-five million, two thousand, four hundred ninety-one".