18874577547881 has 8 divisors (see below), whose sum is σ = 20978947257984. Its totient is φ = 16834957675120.

The previous prime is 18874577547817. The next prime is 18874577547923.

It is a happy number.

18874577547881 is nontrivially palindromic in base 10.

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 18874577547881 - 2⁶ = 18874577547817 is a prime.

It is a super-2 number, since 2×18874577547881² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18874577547796 and 18874577547805.

It is not an unprimeable number, because it can be changed into a prime (18874577247881) 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, 16187458721 + ... + 16187459886.

It is an arithmetic number, because the mean of its divisors is an integer number (2622368407248).

Almost surely, 2^{18874577547881} is an apocalyptic number.

18874577547881 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

18874577547881 is a deficient number, since it is larger than the sum of its proper divisors (2104369710103).

18874577547881 is a wasteful number, since it uses less digits than its factorization.

18874577547881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32374918671.

The product of its digits is 3933798400, while the sum is 80.

The spelling of 18874577547881 in words is "eighteen trillion, eight hundred seventy-four billion, five hundred seventy-seven million, five hundred forty-seven thousand, eight hundred eighty-one".