21153022325543 has 2 divisors, whose sum is σ = 21153022325544. Its totient is φ = 21153022325542.

The previous prime is 21153022325537. The next prime is 21153022325587. The reversal of 21153022325543 is 34552322035112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21153022325543 - 2²⁰ = 21153021276967 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21153022325497 and 21153022325506.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21153022325503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10576511162771 + 10576511162772.

It is an arithmetic number, because the mean of its divisors is an integer number (10576511162772).

Almost surely, 2^{21153022325543} is an apocalyptic number.

21153022325543 is a deficient number, since it is larger than the sum of its proper divisors (1).

21153022325543 is an equidigital number, since it uses as much as digits as its factorization.

21153022325543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216000, while the sum is 38.

The spelling of 21153022325543 in words is "twenty-one trillion, one hundred fifty-three billion, twenty-two million, three hundred twenty-five thousand, five hundred forty-three".