199972257348 has 48 divisors (see below), whose sum is σ = 480055605120. Its totient is φ = 64741803264.

The previous prime is 199972257323. The next prime is 199972257367. The reversal of 199972257348 is 843752279991.

It is a happy number.

It is a Smith number, since the sum of its digits (66) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 143136 + ... + 648407.

It is an arithmetic number, because the mean of its divisors is an integer number (10001158440).

Almost surely, 2^199972257348 is an apocalyptic number.

It is an amenable number.

199972257348 is an abundant number, since it is smaller than the sum of its proper divisors (280083347772).

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

199972257348 is a wasteful number, since it uses less digits than its factorization.

199972257348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 792156 (or 792154 counting only the distinct ones).

The product of its digits is 68584320, while the sum is 66.

The spelling of 199972257348 in words is "one hundred ninety-nine billion, nine hundred seventy-two million, two hundred fifty-seven thousand, three hundred forty-eight".