21623606045214 has 32 divisors (see below), whose sum is σ = 45199716901920. Its totient is φ = 6887575898112.

The previous prime is 21623606045203. The next prime is 21623606045219. The reversal of 21623606045214 is 41254060632612.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21623606045219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 640568679 + ... + 640602434.

It is an arithmetic number, because the mean of its divisors is an integer number (1412491153185).

Almost surely, 2^{21623606045214} is an apocalyptic number.

21623606045214 is an abundant number, since it is smaller than the sum of its proper divisors (23576110856706).

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

21623606045214 is a wasteful number, since it uses less digits than its factorization.

21623606045214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1281171244.

The product of its (nonzero) digits is 414720, while the sum is 42.

Adding to 21623606045214 its reverse (41254060632612), we get a palindrome (62877666677826).

The spelling of 21623606045214 in words is "twenty-one trillion, six hundred twenty-three billion, six hundred six million, forty-five thousand, two hundred fourteen".