215555312255245 has 16 divisors (see below), whose sum is σ = 269628545387520. Its totient is φ = 165226920040000.

The previous prime is 215555312255233. The next prime is 215555312255251. The reversal of 215555312255245 is 542552213555512.

It is not a de Polignac number, because 215555312255245 - 2²⁷ = 215555178037517 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 215555312255192 and 215555312255201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5673982381 + ... + 5674020370.

It is an arithmetic number, because the mean of its divisors is an integer number (16851784086720).

Almost surely, 2^{215555312255245} is an apocalyptic number.

It is an amenable number.

215555312255245 is a deficient number, since it is larger than the sum of its proper divisors (54073233132275).

215555312255245 is a wasteful number, since it uses less digits than its factorization.

215555312255245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11348002916.

The product of its digits is 15000000, while the sum is 52.

The spelling of 215555312255245 in words is "two hundred fifteen trillion, five hundred fifty-five billion, three hundred twelve million, two hundred fifty-five thousand, two hundred forty-five".