18773883477007 has 4 divisors (see below), whose sum is σ = 18956154190480. Its totient is φ = 18591612763536.

The previous prime is 18773883476969. The next prime is 18773883477031. The reversal of 18773883477007 is 70077438837781.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18773883477007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18773883477607) 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, 91135356582 + ... + 91135356787.

It is an arithmetic number, because the mean of its divisors is an integer number (4739038547620).

Almost surely, 2^{18773883477007} is an apocalyptic number.

18773883477007 is a deficient number, since it is larger than the sum of its proper divisors (182270713473).

18773883477007 is a wasteful number, since it uses less digits than its factorization.

18773883477007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182270713472.

The product of its (nonzero) digits is 309786624, while the sum is 70.

The spelling of 18773883477007 in words is "eighteen trillion, seven hundred seventy-three billion, eight hundred eighty-three million, four hundred seventy-seven thousand, seven".