18552053553499 has 8 divisors (see below), whose sum is σ = 18661830980912. Its totient is φ = 18442587552480.

The previous prime is 18552053553493. The next prime is 18552053553521. The reversal of 18552053553499 is 99435535025581.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18552053553499 - 2⁹ = 18552053552987 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18552053553499.

It is not an unprimeable number, because it can be changed into a prime (18552053553493) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77737104 + ... + 77975389.

It is an arithmetic number, because the mean of its divisors is an integer number (2332728872614).

Almost surely, 2^{18552053553499} is an apocalyptic number.

18552053553499 is a deficient number, since it is larger than the sum of its proper divisors (109777427413).

18552053553499 is a wasteful number, since it uses less digits than its factorization.

18552053553499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155713197.

The product of its (nonzero) digits is 145800000, while the sum is 64.

The spelling of 18552053553499 in words is "eighteen trillion, five hundred fifty-two billion, fifty-three million, five hundred fifty-three thousand, four hundred ninety-nine".