215423455350 has 48 divisors (see below), whose sum is σ = 548689377168. Its totient is φ = 55893651840.

The previous prime is 215423455349. The next prime is 215423455421. The reversal of 215423455350 is 53554324512.

It is a super-2 number, since 2×215423455350² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 215423455299 and 215423455308.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19401969 + ... + 19413068.

It is an arithmetic number, because the mean of its divisors is an integer number (11431028691).

Almost surely, 2^215423455350 is an apocalyptic number.

215423455350 is an abundant number, since it is smaller than the sum of its proper divisors (333265921818).

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

215423455350 is a wasteful number, since it uses less digits than its factorization.

215423455350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38815089 (or 38815084 counting only the distinct ones).

The product of its (nonzero) digits is 360000, while the sum is 39.

Adding to 215423455350 its reverse (53554324512), we get a palindrome (268977779862).

The spelling of 215423455350 in words is "two hundred fifteen billion, four hundred twenty-three million, four hundred fifty-five thousand, three hundred fifty".