21632325487 has 2 divisors, whose sum is σ = 21632325488. Its totient is φ = 21632325486.

The previous prime is 21632325479. The next prime is 21632325503. The reversal of 21632325487 is 78452323612.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21632325487 - 2³ = 21632325479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21632325287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10816162743 + 10816162744.

It is an arithmetic number, because the mean of its divisors is an integer number (10816162744).

Almost surely, 2^21632325487 is an apocalyptic number.

21632325487 is a deficient number, since it is larger than the sum of its proper divisors (1).

21632325487 is an equidigital number, since it uses as much as digits as its factorization.

21632325487 is an evil number, because the sum of its binary digits is even.

The product of its digits is 483840, while the sum is 43.

The spelling of 21632325487 in words is "twenty-one billion, six hundred thirty-two million, three hundred twenty-five thousand, four hundred eighty-seven".