21460363153 has 2 divisors, whose sum is σ = 21460363154. Its totient is φ = 21460363152.

The previous prime is 21460363123. The next prime is 21460363201. The reversal of 21460363153 is 35136306412.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16943447889 + 4516915264 = 130167^2 + 67208^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21460363153 is a prime.

It is not a weakly prime, because it can be changed into another prime (21460363123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10730181576 + 10730181577.

It is an arithmetic number, because the mean of its divisors is an integer number (10730181577).

Almost surely, 2^21460363153 is an apocalyptic number.

It is an amenable number.

21460363153 is a deficient number, since it is larger than the sum of its proper divisors (1).

21460363153 is an equidigital number, since it uses as much as digits as its factorization.

21460363153 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38880, while the sum is 34.

Adding to 21460363153 its reverse (35136306412), we get a palindrome (56596669565).

The spelling of 21460363153 in words is "twenty-one billion, four hundred sixty million, three hundred sixty-three thousand, one hundred fifty-three".