21846347153 has 2 divisors, whose sum is σ = 21846347154. Its totient is φ = 21846347152.

The previous prime is 21846347141. The next prime is 21846347177. The reversal of 21846347153 is 35174364812.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18854585344 + 2991761809 = 137312^2 + 54697^2 .

It is a cyclic number.

It is not a de Polignac number, because 21846347153 - 2²⁶ = 21779238289 is a prime.

It is not a weakly prime, because it can be changed into another prime (21846346153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10923173576 + 10923173577.

It is an arithmetic number, because the mean of its divisors is an integer number (10923173577).

Almost surely, 2^21846347153 is an apocalyptic number.

It is an amenable number.

21846347153 is a deficient number, since it is larger than the sum of its proper divisors (1).

21846347153 is an equidigital number, since it uses as much as digits as its factorization.

21846347153 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 483840, while the sum is 44.

The spelling of 21846347153 in words is "twenty-one billion, eight hundred forty-six million, three hundred forty-seven thousand, one hundred fifty-three".