18552562487387 has 2 divisors, whose sum is σ = 18552562487388. Its totient is φ = 18552562487386.

The previous prime is 18552562487323. The next prime is 18552562487401. The reversal of 18552562487387 is 78378426525581.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18552562487387 - 2⁶ = 18552562487323 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18552562487387.

It is not a weakly prime, because it can be changed into another prime (18552562487087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9276281243693 + 9276281243694.

It is an arithmetic number, because the mean of its divisors is an integer number (9276281243694).

Almost surely, 2^{18552562487387} is an apocalyptic number.

18552562487387 is a deficient number, since it is larger than the sum of its proper divisors (1).

18552562487387 is an equidigital number, since it uses as much as digits as its factorization.

18552562487387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 903168000, while the sum is 71.

The spelling of 18552562487387 in words is "eighteen trillion, five hundred fifty-two billion, five hundred sixty-two million, four hundred eighty-seven thousand, three hundred eighty-seven".