20432215215 has 12 divisors (see below), whose sum is σ = 35415839784. Its totient is φ = 10897181424.

The previous prime is 20432215183. The next prime is 20432215241. The reversal of 20432215215 is 51251223402.

20432215215 is a `hidden beast` number, since 2 + 0 + 432 + 2 + 15 + 215 = 666.

It is not a de Polignac number, because 20432215215 - 2⁵ = 20432215183 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 227024569 + ... + 227024658.

It is an arithmetic number, because the mean of its divisors is an integer number (2951319982).

Almost surely, 2^20432215215 is an apocalyptic number.

20432215215 is a deficient number, since it is larger than the sum of its proper divisors (14983624569).

20432215215 is a wasteful number, since it uses less digits than its factorization.

20432215215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 454049238 (or 454049235 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

Adding to 20432215215 its reverse (51251223402), we get a palindrome (71683438617).

The spelling of 20432215215 in words is "twenty billion, four hundred thirty-two million, two hundred fifteen thousand, two hundred fifteen".