18468337550 has 24 divisors (see below), whose sum is σ = 36993502056. Its totient is φ = 6819078240.

The previous prime is 18468337529. The next prime is 18468337561. The reversal of 18468337550 is 5573386481.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14205764 + ... + 14207063.

It is an arithmetic number, because the mean of its divisors is an integer number (1541395919).

Almost surely, 2^18468337550 is an apocalyptic number.

18468337550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18468337550 is an abundant number, since it is smaller than the sum of its proper divisors (18525164506).

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

18468337550 is a wasteful number, since it uses less digits than its factorization.

18468337550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28412852 (or 28412847 counting only the distinct ones).

The product of its (nonzero) digits is 2419200, while the sum is 50.

The spelling of 18468337550 in words is "eighteen billion, four hundred sixty-eight million, three hundred thirty-seven thousand, five hundred fifty".