2066515515122 has 16 divisors (see below), whose sum is σ = 3218875830072. Its totient is φ = 994247354880.

The previous prime is 2066515515109. The next prime is 2066515515143. The reversal of 2066515515122 is 2215155156602.

It can be written as a sum of positive squares in 4 ways, for example, as 724066548241 + 1342448966881 = 850921^2 + 1158641^2 .

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a self number, because there is not a number n which added to its sum of digits gives 2066515515122.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 172606403 + ... + 172618374.

Almost surely, 2^{2066515515122} is an apocalyptic number.

2066515515122 is a deficient number, since it is larger than the sum of its proper divisors (1152360314950).

2066515515122 is a wasteful number, since it uses less digits than its factorization.

2066515515122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345224893.

The product of its (nonzero) digits is 180000, while the sum is 41.

The spelling of 2066515515122 in words is "two trillion, sixty-six billion, five hundred fifteen million, five hundred fifteen thousand, one hundred twenty-two".