99729638134 has 32 divisors (see below), whose sum is σ = 181798883136. Its totient is φ = 40054410240.

The previous prime is 99729638123. The next prime is 99729638147. The reversal of 99729638134 is 43183692799.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 843757 + ... + 954664.

It is an arithmetic number, because the mean of its divisors is an integer number (5681215098).

Almost surely, 2^99729638134 is an apocalyptic number.

99729638134 is a deficient number, since it is larger than the sum of its proper divisors (82069245002).

99729638134 is a wasteful number, since it uses less digits than its factorization.

99729638134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1798680.

The product of its digits is 17635968, while the sum is 61.

The spelling of 99729638134 in words is "ninety-nine billion, seven hundred twenty-nine million, six hundred thirty-eight thousand, one hundred thirty-four".