18625981747008 has 28 divisors (see below), whose sum is σ = 49281243372800. Its totient is φ = 6208660582272.

The previous prime is 18625981747007. The next prime is 18625981747031. The reversal of 18625981747008 is 80074718952681.

It is a self number, because there is not a number n which added to its sum of digits gives 18625981747008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18625981747003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48505160608 + ... + 48505160991.

Almost surely, 2^{18625981747008} is an apocalyptic number.

It is an amenable number.

18625981747008 is an abundant number, since it is smaller than the sum of its proper divisors (30655261625792).

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

18625981747008 is an equidigital number, since it uses as much as digits as its factorization.

18625981747008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97010321614 (or 97010321604 counting only the distinct ones).

The product of its (nonzero) digits is 54190080, while the sum is 66.

The spelling of 18625981747008 in words is "eighteen trillion, six hundred twenty-five billion, nine hundred eighty-one million, seven hundred forty-seven thousand, eight".