199634756133 has 32 divisors (see below), whose sum is σ = 291501573120. Its totient is φ = 120981703680.

The previous prime is 199634756131. The next prime is 199634756143. The reversal of 199634756133 is 331657436991.

It is not a de Polignac number, because 199634756133 - 2¹ = 199634756131 is a prime.

It is a super-2 number, since 2×199634756133² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199634756131) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 680691 + ... + 928767.

It is an arithmetic number, because the mean of its divisors is an integer number (9109424160).

Almost surely, 2^199634756133 is an apocalyptic number.

It is an amenable number.

199634756133 is a deficient number, since it is larger than the sum of its proper divisors (91866816987).

199634756133 is a wasteful number, since it uses less digits than its factorization.

199634756133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248637.

The product of its digits is 11022480, while the sum is 57.

The spelling of 199634756133 in words is "one hundred ninety-nine billion, six hundred thirty-four million, seven hundred fifty-six thousand, one hundred thirty-three".