199634756134 has 16 divisors (see below), whose sum is σ = 326765352960. Its totient is φ = 90717988360.

The previous prime is 199634756131. The next prime is 199634756143. The reversal of 199634756134 is 431657436991.

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 7 ways as a sum of consecutive naturals, for example, 1172614 + ... + 1332025.

It is an arithmetic number, because the mean of its divisors is an integer number (20422834560).

Almost surely, 2^199634756134 is an apocalyptic number.

199634756134 is a deficient number, since it is larger than the sum of its proper divisors (127130596826).

199634756134 is a wasteful number, since it uses less digits than its factorization.

199634756134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2508275.

The product of its digits is 14696640, while the sum is 58.

The spelling of 199634756134 in words is "one hundred ninety-nine billion, six hundred thirty-four million, seven hundred fifty-six thousand, one hundred thirty-four".