21632563045129 has 16 divisors (see below), whose sum is σ = 23644415725056. Its totient is φ = 19702886688000.

The previous prime is 21632563045127. The next prime is 21632563045169. The reversal of 21632563045129 is 92154036523612.

It is a cyclic number.

It is not a de Polignac number, because 21632563045129 - 2¹ = 21632563045127 is a prime.

It is a super-3 number, since 3×21632563045129³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian 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, 27597714 + ... + 28370740.

It is an arithmetic number, because the mean of its divisors is an integer number (1477775982816).

Almost surely, 2^{21632563045129} is an apocalyptic number.

It is an amenable number.

21632563045129 is a deficient number, since it is larger than the sum of its proper divisors (2011852679927).

21632563045129 is a wasteful number, since it uses less digits than its factorization.

21632563045129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 826176.

The product of its (nonzero) digits is 2332800, while the sum is 49.

The spelling of 21632563045129 in words is "twenty-one trillion, six hundred thirty-two billion, five hundred sixty-three million, forty-five thousand, one hundred twenty-nine".