18628787465376 has 48 divisors (see below), whose sum is σ = 53346073199328. Its totient is φ = 5645087110400.

The previous prime is 18628787465257. The next prime is 18628787465377. The reversal of 18628787465376 is 67356478782681.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (18628787465377) 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, 8820447555 + ... + 8820449666.

It is an arithmetic number, because the mean of its divisors is an integer number (1111376524986).

Almost surely, 2^{18628787465376} is an apocalyptic number.

18628787465376 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18628787465376 is an abundant number, since it is smaller than the sum of its proper divisors (34717285733952).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18628787465376 is a wasteful number, since it uses less digits than its factorization.

18628787465376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17640897245 (or 17640897237 counting only the distinct ones).

The product of its digits is 4551966720, while the sum is 78.

The spelling of 18628787465376 in words is "eighteen trillion, six hundred twenty-eight billion, seven hundred eighty-seven million, four hundred sixty-five thousand, three hundred seventy-six".