11756873497 has 4 divisors (see below), whose sum is σ = 11764377856. Its totient is φ = 11749369140.

The previous prime is 11756873467. The next prime is 11756873519. The reversal of 11756873497 is 79437865711.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 79437865711 = 281 ⋅282697031.

It is a cyclic number.

It is not a de Polignac number, because 11756873497 - 2²³ = 11748484889 is a prime.

It is a super-2 number, since 2×11756873497² (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 (11756873437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3749829 + ... + 3752962.

It is an arithmetic number, because the mean of its divisors is an integer number (2941094464).

Almost surely, 2^11756873497 is an apocalyptic number.

It is an amenable number.

11756873497 is a deficient number, since it is larger than the sum of its proper divisors (7504359).

11756873497 is an equidigital number, since it uses as much as digits as its factorization.

11756873497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7504358.

The product of its digits is 8890560, while the sum is 58.

The spelling of 11756873497 in words is "eleven billion, seven hundred fifty-six million, eight hundred seventy-three thousand, four hundred ninety-seven".