11497868591 has 8 divisors (see below), whose sum is σ = 12552281424. Its totient is φ = 10444981120.

The previous prime is 11497868549. The next prime is 11497868609. The reversal of 11497868591 is 19586879411.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11497868591 - 2³⁰ = 10424126767 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11497868591.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11497864591) 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 7 ways as a sum of consecutive naturals, for example, 365546 + ... + 395751.

It is an arithmetic number, because the mean of its divisors is an integer number (1569035178).

Almost surely, 2^11497868591 is an apocalyptic number.

11497868591 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11497868591 is a deficient number, since it is larger than the sum of its proper divisors (1054412833).

11497868591 is a wasteful number, since it uses less digits than its factorization.

11497868591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 762681.

The product of its digits is 4354560, while the sum is 59.

It can be divided in two parts, 11497 and 868591, that added together give a palindrome (880088).

The spelling of 11497868591 in words is "eleven billion, four hundred ninety-seven million, eight hundred sixty-eight thousand, five hundred ninety-one".