513916907691791 has 8 divisors (see below), whose sum is σ = 528697078884000. Its totient is φ = 499325018935392.

The previous prime is 513916907691767. The next prime is 513916907691829. The reversal of 513916907691791 is 197196709619315.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-513916907691791 is a prime.

It is a super-2 number, since 2×513916907691791² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513916907691091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47070603416 + ... + 47070614333.

It is an arithmetic number, because the mean of its divisors is an integer number (66087134860500).

Almost surely, 2^{513916907691791} is an apocalyptic number.

513916907691791 is a deficient number, since it is larger than the sum of its proper divisors (14780171192209).

513916907691791 is a wasteful number, since it uses less digits than its factorization.

513916907691791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94141217905.

The product of its (nonzero) digits is 173604060, while the sum is 74.

The spelling of 513916907691791 in words is "five hundred thirteen trillion, nine hundred sixteen billion, nine hundred seven million, six hundred ninety-one thousand, seven hundred ninety-one".