213551288245 has 16 divisors (see below), whose sum is σ = 271362841200. Its totient is φ = 160775506944.

The previous prime is 213551288231. The next prime is 213551288273. The reversal of 213551288245 is 542882155312.

It can be written as a sum of positive squares in 8 ways, for example, as 25244760996 + 188306527249 = 158886^2 + 433943^2 .

It is a cyclic number.

It is not a de Polignac number, because 213551288245 - 2²³ = 213542899637 is a prime.

It is a super-2 number, since 2×213551288245² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 213551288195 and 213551288204.

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, 768331 + ... + 1008679.

It is an arithmetic number, because the mean of its divisors is an integer number (16960177575).

Almost surely, 2^213551288245 is an apocalyptic number.

It is an amenable number.

213551288245 is a deficient number, since it is larger than the sum of its proper divisors (57811552955).

213551288245 is a wasteful number, since it uses less digits than its factorization.

213551288245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250824.

The product of its digits is 768000, while the sum is 46.

The spelling of 213551288245 in words is "two hundred thirteen billion, five hundred fifty-one million, two hundred eighty-eight thousand, two hundred forty-five".