516606611601 has 4 divisors (see below), whose sum is σ = 688808815472. Its totient is φ = 344404407732.

The previous prime is 516606611593. The next prime is 516606611603. The reversal of 516606611601 is 106116606615.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 516606611601 - 2³ = 516606611593 is a prime.

It is a super-2 number, since 2×516606611601² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 516606611601.

It is not an unprimeable number, because it can be changed into a prime (516606611603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86101101931 + ... + 86101101936.

It is an arithmetic number, because the mean of its divisors is an integer number (172202203868).

Almost surely, 2^516606611601 is an apocalyptic number.

It is an amenable number.

516606611601 is a deficient number, since it is larger than the sum of its proper divisors (172202203871).

516606611601 is a wasteful number, since it uses less digits than its factorization.

516606611601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172202203870.

The product of its (nonzero) digits is 38880, while the sum is 39.

The spelling of 516606611601 in words is "five hundred sixteen billion, six hundred six million, six hundred eleven thousand, six hundred one".