515616650161 has 8 divisors (see below), whose sum is σ = 518453020800. Its totient is φ = 512787834240.

The previous prime is 515616650119. The next prime is 515616650167. The reversal of 515616650161 is 161056616515.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-515616650161 is a prime.

It is a super-2 number, since 2×515616650161² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (515616650167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1751776 + ... + 2024833.

It is an arithmetic number, because the mean of its divisors is an integer number (64806627600).

Almost surely, 2^515616650161 is an apocalyptic number.

It is an amenable number.

515616650161 is a deficient number, since it is larger than the sum of its proper divisors (2836370639).

515616650161 is a wasteful number, since it uses less digits than its factorization.

515616650161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3777359.

The product of its (nonzero) digits is 162000, while the sum is 43.

The spelling of 515616650161 in words is "five hundred fifteen billion, six hundred sixteen million, six hundred fifty thousand, one hundred sixty-one".