516531206257 has 16 divisors (see below), whose sum is σ = 569751646464. Its totient is φ = 464369994000.

The previous prime is 516531206117. The next prime is 516531206267. The reversal of 516531206257 is 752602135615.

It is a de Polignac number, because none of the positive numbers 2^k-516531206257 is a prime.

It is a super-2 number, since 2×516531206257² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (516531206267) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 287782 + ... + 1056352.

It is an arithmetic number, because the mean of its divisors is an integer number (35609477904).

Almost surely, 2^516531206257 is an apocalyptic number.

It is an amenable number.

516531206257 is a deficient number, since it is larger than the sum of its proper divisors (53220440207).

516531206257 is a wasteful number, since it uses less digits than its factorization.

516531206257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 769260.

The product of its (nonzero) digits is 378000, while the sum is 43.

The spelling of 516531206257 in words is "five hundred sixteen billion, five hundred thirty-one million, two hundred six thousand, two hundred fifty-seven".