11747547923 has 4 divisors (see below), whose sum is σ = 11748376848. Its totient is φ = 11746719000.

The previous prime is 11747547907. The next prime is 11747547941. The reversal of 11747547923 is 32974574711.

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 11747547923 - 2⁴ = 11747547907 is a prime.

It is a super-2 number, since 2×11747547923² (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 (11747549923) 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, 392828 + ... + 421673.

It is an arithmetic number, because the mean of its divisors is an integer number (2937094212).

Almost surely, 2^11747547923 is an apocalyptic number.

11747547923 is a deficient number, since it is larger than the sum of its proper divisors (828925).

11747547923 is an equidigital number, since it uses as much as digits as its factorization.

11747547923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 828924.

The product of its digits is 1481760, while the sum is 50.

The spelling of 11747547923 in words is "eleven billion, seven hundred forty-seven million, five hundred forty-seven thousand, nine hundred twenty-three".