199391557052 has 12 divisors (see below), whose sum is σ = 349004507040. Its totient is φ = 99675983616.

The previous prime is 199391557049. The next prime is 199391557067. The reversal of 199391557052 is 250755193991.

199391557052 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 3 ways as a sum of consecutive naturals, for example, 4926053 + ... + 4966364.

It is an arithmetic number, because the mean of its divisors is an integer number (29083708920).

Almost surely, 2^199391557052 is an apocalyptic number.

It is an amenable number.

199391557052 is a deficient number, since it is larger than the sum of its proper divisors (149612949988).

199391557052 is a wasteful number, since it uses less digits than its factorization.

199391557052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9897460 (or 9897458 counting only the distinct ones).

The product of its (nonzero) digits is 3827250, while the sum is 56.

The spelling of 199391557052 in words is "one hundred ninety-nine billion, three hundred ninety-one million, five hundred fifty-seven thousand, fifty-two".