20086729665194 has 4 divisors (see below), whose sum is σ = 30130094497794. Its totient is φ = 10043364832596.

The previous prime is 20086729665169. The next prime is 20086729665251. The reversal of 20086729665194 is 49156692768002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 12813271270969 + 7273458394225 = 3579563^2 + 2696935^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20086729665194.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5021682416297 + ... + 5021682416300.

Almost surely, 2^{20086729665194} is an apocalyptic number.

20086729665194 is a deficient number, since it is larger than the sum of its proper divisors (10043364832600).

20086729665194 is a wasteful number, since it uses less digits than its factorization.

20086729665194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10043364832599.

The product of its (nonzero) digits is 78382080, while the sum is 65.

The spelling of 20086729665194 in words is "twenty trillion, eighty-six billion, seven hundred twenty-nine million, six hundred sixty-five thousand, one hundred ninety-four".