516166661615 has 32 divisors (see below), whose sum is σ = 687276645120. Its totient is φ = 368969644800.

The previous prime is 516166661587. The next prime is 516166661671.

516166661615 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 516166661615 - 2¹⁴ = 516166645231 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29491547 + ... + 29509043.

It is an arithmetic number, because the mean of its divisors is an integer number (21477395160).

Almost surely, 2^516166661615 is an apocalyptic number.

516166661615 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

516166661615 is a deficient number, since it is larger than the sum of its proper divisors (171109983505).

516166661615 is a wasteful number, since it uses less digits than its factorization.

516166661615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26663.

The product of its digits is 1166400, while the sum is 50.

The spelling of 516166661615 in words is "five hundred sixteen billion, one hundred sixty-six million, six hundred sixty-one thousand, six hundred fifteen".