11498286581 has 2 divisors, whose sum is σ = 11498286582. Its totient is φ = 11498286580.

The previous prime is 11498286571. The next prime is 11498286599. The reversal of 11498286581 is 18568289411.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7510995556 + 3987291025 = 86666^2 + 63145^2 .

It is a cyclic number.

It is not a de Polignac number, because 11498286581 - 2⁶ = 11498286517 is a prime.

It is a super-2 number, since 2×11498286581² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11498286511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5749143290 + 5749143291.

It is an arithmetic number, because the mean of its divisors is an integer number (5749143291).

Almost surely, 2^11498286581 is an apocalyptic number.

It is an amenable number.

11498286581 is a deficient number, since it is larger than the sum of its proper divisors (1).

11498286581 is an equidigital number, since it uses as much as digits as its factorization.

11498286581 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1105920, while the sum is 53.

The spelling of 11498286581 in words is "eleven billion, four hundred ninety-eight million, two hundred eighty-six thousand, five hundred eighty-one".