11772171454 has 4 divisors (see below), whose sum is σ = 17658257184. Its totient is φ = 5886085726.

The previous prime is 11772171427. The next prime is 11772171461. The reversal of 11772171454 is 45417127711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 45417127711 = 84407 ⋅538073.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2943042862 + ... + 2943042865.

It is an arithmetic number, because the mean of its divisors is an integer number (4414564296).

Almost surely, 2^11772171454 is an apocalyptic number.

11772171454 is a deficient number, since it is larger than the sum of its proper divisors (5886085730).

11772171454 is an equidigital number, since it uses as much as digits as its factorization.

11772171454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5886085729.

The product of its digits is 54880, while the sum is 40.

The spelling of 11772171454 in words is "eleven billion, seven hundred seventy-two million, one hundred seventy-one thousand, four hundred fifty-four".