51729623537099 has 4 divisors (see below), whose sum is σ = 52059111585264. Its totient is φ = 51400135488936.

The previous prime is 51729623537069. The next prime is 51729623537131. The reversal of 51729623537099 is 99073532692715.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51729623537099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51729623537029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 164744023847 + ... + 164744024160.

It is an arithmetic number, because the mean of its divisors is an integer number (13014777896316).

Almost surely, 2^{51729623537099} is an apocalyptic number.

51729623537099 is a deficient number, since it is larger than the sum of its proper divisors (329488048165).

51729623537099 is a wasteful number, since it uses less digits than its factorization.

51729623537099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329488048164.

The product of its (nonzero) digits is 192893400, while the sum is 68.

The spelling of 51729623537099 in words is "fifty-one trillion, seven hundred twenty-nine billion, six hundred twenty-three million, five hundred thirty-seven thousand, ninety-nine".