18978979282201 has 8 divisors (see below), whose sum is σ = 19085803117920. Its totient is φ = 18872164291488.

The previous prime is 18978979282177. The next prime is 18978979282217. The reversal of 18978979282201 is 10228297987981.

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 18978979282201 - 2²³ = 18978970893593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18978979282261) 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, 2116045 + ... + 6514261.

It is an arithmetic number, because the mean of its divisors is an integer number (2385725389740).

Almost surely, 2^{18978979282201} is an apocalyptic number.

It is an amenable number.

18978979282201 is a deficient number, since it is larger than the sum of its proper divisors (106823835719).

18978979282201 is a wasteful number, since it uses less digits than its factorization.

18978979282201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4422503.

The product of its (nonzero) digits is 146313216, while the sum is 73.

The spelling of 18978979282201 in words is "eighteen trillion, nine hundred seventy-eight billion, nine hundred seventy-nine million, two hundred eighty-two thousand, two hundred one".