18052553645 has 32 divisors (see below), whose sum is σ = 24931307520. Its totient is φ = 12292338240.

The previous prime is 18052553627. The next prime is 18052553663. The reversal of 18052553645 is 54635525081.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (18052553627) and next prime (18052553663).

It is not a de Polignac number, because 18052553645 - 2²⁶ = 17985444781 is a prime.

It is a super-3 number, since 3×18052553645³ (a number of 32 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18052553596 and 18052553605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5705834 + ... + 5708996.

It is an arithmetic number, because the mean of its divisors is an integer number (779103360).

Almost surely, 2^18052553645 is an apocalyptic number.

It is an amenable number.

18052553645 is a deficient number, since it is larger than the sum of its proper divisors (6878753875).

18052553645 is a wasteful number, since it uses less digits than its factorization.

18052553645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4265.

The product of its (nonzero) digits is 720000, while the sum is 44.

The spelling of 18052553645 in words is "eighteen billion, fifty-two million, five hundred fifty-three thousand, six hundred forty-five".