199729121944307 has 8 divisors (see below), whose sum is σ = 200857668818352. Its totient is φ = 198600850576800.

The previous prime is 199729121944273. The next prime is 199729121944327. The reversal of 199729121944307 is 703449121927991.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 199729121944307 - 2⁴⁶ = 129360377766643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (199729121944327) 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, 67422548 + ... + 70322529.

It is an arithmetic number, because the mean of its divisors is an integer number (25107208602294).

Almost surely, 2^{199729121944307} is an apocalyptic number.

199729121944307 is a deficient number, since it is larger than the sum of its proper divisors (1128546874045).

199729121944307 is a wasteful number, since it uses less digits than its factorization.

199729121944307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137753269.

The product of its (nonzero) digits is 61725888, while the sum is 68.

The spelling of 199729121944307 in words is "one hundred ninety-nine trillion, seven hundred twenty-nine billion, one hundred twenty-one million, nine hundred forty-four thousand, three hundred seven".