215212426432 has 28 divisors (see below), whose sum is σ = 452183464440. Its totient is φ = 101276435456.

The previous prime is 215212426369. The next prime is 215212426489. The reversal of 215212426432 is 234624212512.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98901682 + ... + 98903857.

Almost surely, 2^215212426432 is an apocalyptic number.

It is an amenable number.

215212426432 is an abundant number, since it is smaller than the sum of its proper divisors (236971038008).

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

215212426432 is a wasteful number, since it uses less digits than its factorization.

215212426432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197805568 (or 197805558 counting only the distinct ones).

The product of its digits is 46080, while the sum is 34.

Adding to 215212426432 its reverse (234624212512), we get a palindrome (449836638944).

The spelling of 215212426432 in words is "two hundred fifteen billion, two hundred twelve million, four hundred twenty-six thousand, four hundred thirty-two".