215610506255153 has 4 divisors (see below), whose sum is σ = 221437817235060. Its totient is φ = 209783195275248.

The previous prime is 215610506255129. The next prime is 215610506255167. The reversal of 215610506255153 is 351552605016512.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 127918294149409 + 87692212105744 = 11310097^2 + 9364412^2 .

It is a cyclic number.

It is not a de Polignac number, because 215610506255153 - 2²⁴ = 215610489477937 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 215610506255098 and 215610506255107.

It is not an unprimeable number, because it can be changed into a prime (215610506255953) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2913655489898 + ... + 2913655489971.

It is an arithmetic number, because the mean of its divisors is an integer number (55359454308765).

Almost surely, 2^{215610506255153} is an apocalyptic number.

It is an amenable number.

215610506255153 is a deficient number, since it is larger than the sum of its proper divisors (5827310979907).

215610506255153 is an equidigital number, since it uses as much as digits as its factorization.

215610506255153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5827310979906.

The product of its (nonzero) digits is 1350000, while the sum is 47.

The spelling of 215610506255153 in words is "two hundred fifteen trillion, six hundred ten billion, five hundred six million, two hundred fifty-five thousand, one hundred fifty-three".