215245414386 has 12 divisors (see below), whose sum is σ = 466365064542. Its totient is φ = 71748471456.

The previous prime is 215245414339. The next prime is 215245414387. The reversal of 215245414386 is 683414542512.

215245414386 is a `hidden beast` number, since 2 + 1 + 5 + 24 + 541 + 4 + 3 + 86 = 666.

It can be written as a sum of positive squares in only one way, i.e., 169847015625 + 45398398761 = 412125^2 + 213069^2 .

It is a super-3 number, since 3×215245414386³ (a number of 35 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (215245414387) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5979039271 + ... + 5979039306.

Almost surely, 2^215245414386 is an apocalyptic number.

215245414386 is an abundant number, since it is smaller than the sum of its proper divisors (251119650156).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

215245414386 is a wasteful number, since it uses less digits than its factorization.

215245414386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11958078585 (or 11958078582 counting only the distinct ones).

The product of its digits is 921600, while the sum is 45.

Adding to 215245414386 its reverse (683414542512), we get a palindrome (898659956898).

The spelling of 215245414386 in words is "two hundred fifteen billion, two hundred forty-five million, four hundred fourteen thousand, three hundred eighty-six".