21552303467 has 2 divisors, whose sum is σ = 21552303468. Its totient is φ = 21552303466.

The previous prime is 21552303449. The next prime is 21552303517. The reversal of 21552303467 is 76430325512.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21552303467 - 2³² = 17257336171 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21552303467.

It is not a weakly prime, because it can be changed into another prime (21552303407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10776151733 + 10776151734.

It is an arithmetic number, because the mean of its divisors is an integer number (10776151734).

Almost surely, 2^21552303467 is an apocalyptic number.

21552303467 is a deficient number, since it is larger than the sum of its proper divisors (1).

21552303467 is an equidigital number, since it uses as much as digits as its factorization.

21552303467 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 151200, while the sum is 38.

Adding to 21552303467 its reverse (76430325512), we get a palindrome (97982628979).

The spelling of 21552303467 in words is "twenty-one billion, five hundred fifty-two million, three hundred three thousand, four hundred sixty-seven".