18277233546 has 64 divisors (see below), whose sum is σ = 42983289216. Its totient is φ = 5107968000.

The previous prime is 18277233529. The next prime is 18277233547. The reversal of 18277233546 is 64533277281.

It is a junction number, because it is equal to n+sod(n) for n = 18277233495 and 18277233504.

It is not an unprimeable number, because it can be changed into a prime (18277233547) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1021590 + ... + 1039326.

It is an arithmetic number, because the mean of its divisors is an integer number (671613894).

Almost surely, 2^18277233546 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18277233546, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21491644608).

18277233546 is an abundant number, since it is smaller than the sum of its proper divisors (24706055670).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18277233546 is a wasteful number, since it uses less digits than its factorization.

18277233546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18967.

The product of its digits is 1693440, while the sum is 48.

The spelling of 18277233546 in words is "eighteen billion, two hundred seventy-seven million, two hundred thirty-three thousand, five hundred forty-six".