198369523455 has 16 divisors (see below), whose sum is σ = 328335763680. Its totient is φ = 102148903808.

The previous prime is 198369523453. The next prime is 198369523463. The reversal of 198369523455 is 554325963891.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 198369523455 - 2¹ = 198369523453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198369523453) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 228010512 + ... + 228011381.

It is an arithmetic number, because the mean of its divisors is an integer number (20520985230).

Almost surely, 2^198369523455 is an apocalyptic number.

198369523455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

198369523455 is a deficient number, since it is larger than the sum of its proper divisors (129966240225).

198369523455 is a wasteful number, since it uses less digits than its factorization.

198369523455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456021930.

The product of its digits is 34992000, while the sum is 60.

The spelling of 198369523455 in words is "one hundred ninety-eight billion, three hundred sixty-nine million, five hundred twenty-three thousand, four hundred fifty-five".