21300325634 has 16 divisors (see below), whose sum is σ = 36869359488. Its totient is φ = 9040082112.

The previous prime is 21300325633. The next prime is 21300325637. The reversal of 21300325634 is 43652300312.

It is a super-2 number, since 2×21300325634² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21300325597 and 21300325606.

It is not an unprimeable number, because it can be changed into a prime (21300325633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7384247 + ... + 7387130.

It is an arithmetic number, because the mean of its divisors is an integer number (2304334968).

Almost surely, 2^21300325634 is an apocalyptic number.

21300325634 is a deficient number, since it is larger than the sum of its proper divisors (15569033854).

21300325634 is a wasteful number, since it uses less digits than its factorization.

21300325634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14771489.

The product of its (nonzero) digits is 12960, while the sum is 29.

Adding to 21300325634 its reverse (43652300312), we get a palindrome (64952625946).

The spelling of 21300325634 in words is "twenty-one billion, three hundred million, three hundred twenty-five thousand, six hundred thirty-four".