18550051835374 has 4 divisors (see below), whose sum is σ = 27825077753064. Its totient is φ = 9275025917686.

The previous prime is 18550051835363. The next prime is 18550051835377. The reversal of 18550051835374 is 47353815005581.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18550051835377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4637512958842 + ... + 4637512958845.

It is an arithmetic number, because the mean of its divisors is an integer number (6956269438266).

Almost surely, 2^{18550051835374} is an apocalyptic number.

18550051835374 is a deficient number, since it is larger than the sum of its proper divisors (9275025917690).

18550051835374 is an equidigital number, since it uses as much as digits as its factorization.

18550051835374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9275025917689.

The product of its (nonzero) digits is 10080000, while the sum is 55.

The spelling of 18550051835374 in words is "eighteen trillion, five hundred fifty billion, fifty-one million, eight hundred thirty-five thousand, three hundred seventy-four".