11641172923 has 4 divisors (see below), whose sum is σ = 11641520848. Its totient is φ = 11640825000.

The previous prime is 11641172899. The next prime is 11641172929. The reversal of 11641172923 is 32927114611.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32927114611 = 2767 ⋅11899933.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11641172923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11641172929) 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, 117711 + ... + 192712.

It is an arithmetic number, because the mean of its divisors is an integer number (2910380212).

Almost surely, 2^11641172923 is an apocalyptic number.

11641172923 is a deficient number, since it is larger than the sum of its proper divisors (347925).

11641172923 is an equidigital number, since it uses as much as digits as its factorization.

11641172923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347924.

The product of its digits is 18144, while the sum is 37.

The spelling of 11641172923 in words is "eleven billion, six hundred forty-one million, one hundred seventy-two thousand, nine hundred twenty-three".