11591287451 has 2 divisors, whose sum is σ = 11591287452. Its totient is φ = 11591287450.

The previous prime is 11591287397. The next prime is 11591287493. The reversal of 11591287451 is 15478219511.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11591287451 - 2¹⁴ = 11591271067 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (11591281451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5795643725 + 5795643726.

It is an arithmetic number, because the mean of its divisors is an integer number (5795643726).

Almost surely, 2^11591287451 is an apocalyptic number.

11591287451 is a deficient number, since it is larger than the sum of its proper divisors (1).

11591287451 is an equidigital number, since it uses as much as digits as its factorization.

11591287451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 100800, while the sum is 44.

The spelling of 11591287451 in words is "eleven billion, five hundred ninety-one million, two hundred eighty-seven thousand, four hundred fifty-one".