18445179561240 has 64 divisors (see below), whose sum is σ = 56831093796960. Its totient is φ = 4785776317440.

The previous prime is 18445179561223. The next prime is 18445179561241. The reversal of 18445179561240 is 4216597154481.

It is a hoax number, since the sum of its digits (57) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18445179561241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2077155421 + ... + 2077164300.

Almost surely, 2^{18445179561240} is an apocalyptic number.

18445179561240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18445179561240 is an abundant number, since it is smaller than the sum of its proper divisors (38385914235720).

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

18445179561240 is a wasteful number, since it uses less digits than its factorization.

18445179561240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4154319772 (or 4154319768 counting only the distinct ones).

The product of its (nonzero) digits is 9676800, while the sum is 57.

The spelling of 18445179561240 in words is "eighteen trillion, four hundred forty-five billion, one hundred seventy-nine million, five hundred sixty-one thousand, two hundred forty".