11554501123 has 4 divisors (see below), whose sum is σ = 12604910328. Its totient is φ = 10504091920.

The previous prime is 11554501087. The next prime is 11554501213. The reversal of 11554501123 is 32110545511.

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 11554501123 - 2²¹ = 11552403971 is a prime.

It is a super-2 number, since 2×11554501123² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11554501091 and 11554501100.

It is not an unprimeable number, because it can be changed into a prime (11554501423) 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, 525204586 + ... + 525204607.

It is an arithmetic number, because the mean of its divisors is an integer number (3151227582).

Almost surely, 2^11554501123 is an apocalyptic number.

11554501123 is a deficient number, since it is larger than the sum of its proper divisors (1050409205).

11554501123 is a wasteful number, since it uses less digits than its factorization.

11554501123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1050409204.

The product of its (nonzero) digits is 3000, while the sum is 28.

The spelling of 11554501123 in words is "eleven billion, five hundred fifty-four million, five hundred one thousand, one hundred twenty-three".