21632563045126 has 32 divisors (see below), whose sum is σ = 35749949840640. Its totient is φ = 9735428748000.

The previous prime is 21632563045097. The next prime is 21632563045127. The reversal of 21632563045126 is 62154036523612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21632563045127) 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, 199790335 + ... + 199898581.

It is an arithmetic number, because the mean of its divisors is an integer number (1117185932520).

Almost surely, 2^{21632563045126} is an apocalyptic number.

21632563045126 is a deficient number, since it is larger than the sum of its proper divisors (14117386795514).

21632563045126 is a wasteful number, since it uses less digits than its factorization.

21632563045126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198300.

The product of its (nonzero) digits is 1555200, while the sum is 46.

Adding to 21632563045126 its reverse (62154036523612), we get a palindrome (83786599568738).

The spelling of 21632563045126 in words is "twenty-one trillion, six hundred thirty-two billion, five hundred sixty-three million, forty-five thousand, one hundred twenty-six".