516878284431 has 12 divisors (see below), whose sum is σ = 707807662872. Its totient is φ = 335267487504.

The previous prime is 516878284423. The next prime is 516878284469. The reversal of 516878284431 is 134482878615.

It is not a de Polignac number, because 516878284431 - 2³ = 516878284423 is a prime.

It is a super-2 number, since 2×516878284431² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (516878284411) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7540410 + ... + 7608648.

It is an arithmetic number, because the mean of its divisors is an integer number (58983971906).

Almost surely, 2^516878284431 is an apocalyptic number.

516878284431 is a deficient number, since it is larger than the sum of its proper divisors (190929378441).

516878284431 is an frugal number, since it uses more digits than its factorization.

516878284431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136518 (or 68279 counting only the distinct ones).

The product of its digits is 10321920, while the sum is 57.

The spelling of 516878284431 in words is "five hundred sixteen billion, eight hundred seventy-eight million, two hundred eighty-four thousand, four hundred thirty-one".