516215346465 has 32 divisors (see below), whose sum is σ = 1016547146496. Its totient is φ = 217831530240.

The previous prime is 516215346463. The next prime is 516215346503. The reversal of 516215346465 is 564643512615.

It is a happy number.

It is not a de Polignac number, because 516215346465 - 2¹ = 516215346463 is a prime.

It is not an unprimeable number, because it can be changed into a prime (516215346461) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 189088506 + ... + 189091235.

It is an arithmetic number, because the mean of its divisors is an integer number (31767098328).

Almost surely, 2^516215346465 is an apocalyptic number.

It is an amenable number.

516215346465 is a deficient number, since it is larger than the sum of its proper divisors (500331800031).

516215346465 is a wasteful number, since it uses less digits than its factorization.

516215346465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378179769.

The product of its digits is 2592000, while the sum is 48.

The spelling of 516215346465 in words is "five hundred sixteen billion, two hundred fifteen million, three hundred forty-six thousand, four hundred sixty-five".