215122623504605 has 16 divisors (see below), whose sum is σ = 262532803233600. Its totient is φ = 169174557221760.

The previous prime is 215122623504601. The next prime is 215122623504647. The reversal of 215122623504605 is 506405326221512.

It is a happy number.

215122623504605 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 215122623504605 - 2² = 215122623504601 is a prime.

It is a super-2 number, since 2×215122623504605² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215122623504601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6723995 + ... + 21804984.

It is an arithmetic number, because the mean of its divisors is an integer number (16408300202100).

Almost surely, 2^{215122623504605} is an apocalyptic number.

It is an amenable number.

215122623504605 is a deficient number, since it is larger than the sum of its proper divisors (47410179728995).

215122623504605 is a wasteful number, since it uses less digits than its factorization.

215122623504605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28554604.

The product of its (nonzero) digits is 864000, while the sum is 44.

The spelling of 215122623504605 in words is "two hundred fifteen trillion, one hundred twenty-two billion, six hundred twenty-three million, five hundred four thousand, six hundred five".