18888408745361 has 8 divisors (see below), whose sum is σ = 19228973595264. Its totient is φ = 18549914199040.

The previous prime is 18888408745333. The next prime is 18888408745363. The reversal of 18888408745361 is 16354780488881.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18888408745361 - 2¹⁴ = 18888408728977 is a prime.

It is a super-2 number, since 2×18888408745361² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (71).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18888408745363) 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, 517557485 + ... + 517593978.

It is an arithmetic number, because the mean of its divisors is an integer number (2403621699408).

Almost surely, 2^{18888408745361} is an apocalyptic number.

It is an amenable number.

18888408745361 is a deficient number, since it is larger than the sum of its proper divisors (340564849903).

18888408745361 is a wasteful number, since it uses less digits than its factorization.

18888408745361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1035151791.

The product of its (nonzero) digits is 330301440, while the sum is 71.

The spelling of 18888408745361 in words is "eighteen trillion, eight hundred eighty-eight billion, four hundred eight million, seven hundred forty-five thousand, three hundred sixty-one".