11557473623 has 4 divisors (see below), whose sum is σ = 11562610248. Its totient is φ = 11552337000.

The previous prime is 11557473611. The next prime is 11557473637. The reversal of 11557473623 is 32637475511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32637475511 = 19 ⋅1717761869.

It is a cyclic number.

It is not a de Polignac number, because 11557473623 - 2⁴ = 11557473607 is a prime.

It is a super-2 number, since 2×11557473623² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11557475623) 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, 2564936 + ... + 2569437.

It is an arithmetic number, because the mean of its divisors is an integer number (2890652562).

Almost surely, 2^11557473623 is an apocalyptic number.

11557473623 is a deficient number, since it is larger than the sum of its proper divisors (5136625).

11557473623 is an equidigital number, since it uses as much as digits as its factorization.

11557473623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5136624.

The product of its digits is 529200, while the sum is 44.

The spelling of 11557473623 in words is "eleven billion, five hundred fifty-seven million, four hundred seventy-three thousand, six hundred twenty-three".