516891738201 has 4 divisors (see below), whose sum is σ = 689188984272. Its totient is φ = 344594492132.

The previous prime is 516891738199. The next prime is 516891738241. The reversal of 516891738201 is 102837198615.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 516891738201 - 2¹ = 516891738199 is a prime.

It is a super-2 number, since 2×516891738201² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (516891738241) 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, 86148623031 + ... + 86148623036.

It is an arithmetic number, because the mean of its divisors is an integer number (172297246068).

Almost surely, 2^516891738201 is an apocalyptic number.

It is an amenable number.

516891738201 is a deficient number, since it is larger than the sum of its proper divisors (172297246071).

516891738201 is a wasteful number, since it uses less digits than its factorization.

516891738201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172297246070.

The product of its (nonzero) digits is 725760, while the sum is 51.

The spelling of 516891738201 in words is "five hundred sixteen billion, eight hundred ninety-one million, seven hundred thirty-eight thousand, two hundred one".