11551550023 has 12 divisors (see below), whose sum is σ = 13166828040. Its totient is φ = 10101757536.

The previous prime is 11551549993. The next prime is 11551550027. The reversal of 11551550023 is 32005515511.

It is not a de Polignac number, because 11551550023 - 2³³ = 2961615431 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11551549973 and 11551550000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11551550027) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1795536 + ... + 1801957.

It is an arithmetic number, because the mean of its divisors is an integer number (1097235670).

Almost surely, 2^11551550023 is an apocalyptic number.

11551550023 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

11551550023 is a deficient number, since it is larger than the sum of its proper divisors (1615278017).

11551550023 is a wasteful number, since it uses less digits than its factorization.

11551550023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3597538 (or 3597525 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 28.

The spelling of 11551550023 in words is "eleven billion, five hundred fifty-one million, five hundred fifty thousand, twenty-three".