2116615516 has 12 divisors (see below), whose sum is σ = 3706672032. Its totient is φ = 1057566368.

The previous prime is 2116615513. The next prime is 2116615537. The reversal of 2116615516 is 6155166112.

It is a super-2 number, since 2×2116615516² = 8960122485143892512, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2116615511) 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 3 ways as a sum of consecutive naturals, for example, 178900 + ... + 190363.

It is an arithmetic number, because the mean of its divisors is an integer number (308889336).

Almost surely, 2^2116615516 is an apocalyptic number.

It is an amenable number.

2116615516 is a deficient number, since it is larger than the sum of its proper divisors (1590056516).

2116615516 is a wasteful number, since it uses less digits than its factorization.

2116615516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370700 (or 370698 counting only the distinct ones).

The product of its digits is 10800, while the sum is 34.

The square root of 2116615516 is about 46006.6899048388. The cubic root of 2116615516 is about 1283.9476748442.

The spelling of 2116615516 in words is "two billion, one hundred sixteen million, six hundred fifteen thousand, five hundred sixteen".