18906043482977 has 8 divisors (see below), whose sum is σ = 22877901357696. Its totient is φ = 15251934238272.

The previous prime is 18906043482947. The next prime is 18906043482979. The reversal of 18906043482977 is 77928434060981.

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 18906043482977 - 2⁶ = 18906043482913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18906043482979) 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, 79437157373 + ... + 79437157610.

It is an arithmetic number, because the mean of its divisors is an integer number (2859737669712).

Almost surely, 2^{18906043482977} is an apocalyptic number.

18906043482977 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

18906043482977 is a deficient number, since it is larger than the sum of its proper divisors (3971857874719).

18906043482977 is a wasteful number, since it uses less digits than its factorization.

18906043482977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158874315007.

The product of its (nonzero) digits is 146313216, while the sum is 68.

The spelling of 18906043482977 in words is "eighteen trillion, nine hundred six billion, forty-three million, four hundred eighty-two thousand, nine hundred seventy-seven".