21434032245 has 16 divisors (see below), whose sum is σ = 35400724992. Its totient is φ = 11062726080.

The previous prime is 21434032231. The next prime is 21434032261. The reversal of 21434032245 is 54223043412.

It is not a de Polignac number, because 21434032245 - 2⁴ = 21434032229 is a prime.

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, 23046882 + ... + 23047811.

It is an arithmetic number, because the mean of its divisors is an integer number (2212545312).

Almost surely, 2^21434032245 is an apocalyptic number.

It is an amenable number.

21434032245 is a deficient number, since it is larger than the sum of its proper divisors (13966692747).

21434032245 is a wasteful number, since it uses less digits than its factorization.

21434032245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46094732.

The product of its (nonzero) digits is 23040, while the sum is 30.

Adding to 21434032245 its reverse (54223043412), we get a palindrome (75657075657).

The spelling of 21434032245 in words is "twenty-one billion, four hundred thirty-four million, thirty-two thousand, two hundred forty-five".