516924219891 has 8 divisors (see below), whose sum is σ = 725507677120. Its totient is φ = 326478454632.

The previous prime is 516924219869. The next prime is 516924219913. The reversal of 516924219891 is 198912429615.

It is an interprime number because it is at equal distance from previous prime (516924219869) and next prime (516924219913).

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

It is not a de Polignac number, because 516924219891 - 2⁵ = 516924219859 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57), and also a Moran number because the ratio is a prime number: 9068845963 = 516924219891 / (5 + 1 + 6 + 9 + 2 + 4 + 2 + 1 + 9 + 8 + 9 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (516924219811) 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, 4534422925 + ... + 4534423038.

It is an arithmetic number, because the mean of its divisors is an integer number (90688459640).

Almost surely, 2^516924219891 is an apocalyptic number.

516924219891 is a deficient number, since it is larger than the sum of its proper divisors (208583457229).

516924219891 is a wasteful number, since it uses less digits than its factorization.

516924219891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9068845985.

The product of its digits is 2799360, while the sum is 57.

The spelling of 516924219891 in words is "five hundred sixteen billion, nine hundred twenty-four million, two hundred nineteen thousand, eight hundred ninety-one".