10659981499 has 4 divisors (see below), whose sum is σ = 10886789664. Its totient is φ = 10433173336.

The previous prime is 10659981491. The next prime is 10659981503. The reversal of 10659981499 is 99418995601.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10659981499 - 2³ = 10659981491 is a prime.

It is a super-2 number, since 2×10659981499² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10659981491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113404012 + ... + 113404105.

It is an arithmetic number, because the mean of its divisors is an integer number (2721697416).

Almost surely, 2^10659981499 is an apocalyptic number.

10659981499 is a deficient number, since it is larger than the sum of its proper divisors (226808165).

10659981499 is an equidigital number, since it uses as much as digits as its factorization.

10659981499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226808164.

The product of its (nonzero) digits is 6298560, while the sum is 61.

The spelling of 10659981499 in words is "ten billion, six hundred fifty-nine million, nine hundred eighty-one thousand, four hundred ninety-nine".