15841488491 has 2 divisors, whose sum is σ = 15841488492. Its totient is φ = 15841488490.

The previous prime is 15841488473. The next prime is 15841488497. The reversal of 15841488491 is 19488414851.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 15841488491 - 2⁶ = 15841488427 is a prime.

It is a super-2 number, since 2×15841488491² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (15841488497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7920744245 + 7920744246.

It is an arithmetic number, because the mean of its divisors is an integer number (7920744246).

Almost surely, 2^15841488491 is an apocalyptic number.

15841488491 is a deficient number, since it is larger than the sum of its proper divisors (1).

15841488491 is an equidigital number, since it uses as much as digits as its factorization.

15841488491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1474560, while the sum is 53.

The spelling of 15841488491 in words is "fifteen billion, eight hundred forty-one million, four hundred eighty-eight thousand, four hundred ninety-one".