12054555511 has 4 divisors (see below), whose sum is σ = 12061000224. Its totient is φ = 12048110800.

The previous prime is 12054555503. The next prime is 12054555521. The reversal of 12054555511 is 11555545021.

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 12054555511 - 2³ = 12054555503 is a prime.

It is a super-2 number, since 2×12054555511² (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 (12054555521) 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, 3219550 + ... + 3223291.

It is an arithmetic number, because the mean of its divisors is an integer number (3015250056).

Almost surely, 2^12054555511 is an apocalyptic number.

12054555511 is a deficient number, since it is larger than the sum of its proper divisors (6444713).

12054555511 is an equidigital number, since it uses as much as digits as its factorization.

12054555511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6444712.

The product of its (nonzero) digits is 25000, while the sum is 34.

The spelling of 12054555511 in words is "twelve billion, fifty-four million, five hundred fifty-five thousand, five hundred eleven".