18987936552484 has 12 divisors (see below), whose sum is σ = 33253196868864. Its totient is φ = 9487023161384.

The previous prime is 18987936552451. The next prime is 18987936552503. The reversal of 18987936552484 is 48425563978981.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1736272564 + ... + 1736283499.

It is an arithmetic number, because the mean of its divisors is an integer number (2771099739072).

Almost surely, 2^{18987936552484} is an apocalyptic number.

It is an amenable number.

18987936552484 is a deficient number, since it is larger than the sum of its proper divisors (14265260316380).

18987936552484 is a wasteful number, since it uses less digits than its factorization.

18987936552484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3472557434 (or 3472557432 counting only the distinct ones).

The product of its digits is 4180377600, while the sum is 79.

The spelling of 18987936552484 in words is "eighteen trillion, nine hundred eighty-seven billion, nine hundred thirty-six million, five hundred fifty-two thousand, four hundred eighty-four".