165503763198 has 24 divisors (see below), whose sum is σ = 360393462000. Its totient is φ = 54890694144.

The previous prime is 165503763181. The next prime is 165503763203. The reversal of 165503763198 is 891367305561.

165503763198 is a `hidden beast` number, since 1 + 6 + 550 + 3 + 76 + 3 + 19 + 8 = 666.

165503763198 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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, 23098563 + ... + 23105726.

It is an arithmetic number, because the mean of its divisors is an integer number (15016394250).

Almost surely, 2^165503763198 is an apocalyptic number.

165503763198 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

165503763198 is an abundant number, since it is smaller than the sum of its proper divisors (194889698802).

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

165503763198 is a wasteful number, since it uses less digits than its factorization.

165503763198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46204496 (or 46204493 counting only the distinct ones).

The product of its (nonzero) digits is 4082400, while the sum is 54.

The spelling of 165503763198 in words is "one hundred sixty-five billion, five hundred three million, seven hundred sixty-three thousand, one hundred ninety-eight".