21895695337 has 2 divisors, whose sum is σ = 21895695338. Its totient is φ = 21895695336.

The previous prime is 21895695329. The next prime is 21895695389. The reversal of 21895695337 is 73359659812.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21333815721 + 561879616 = 146061^2 + 23704^2 .

It is a cyclic number.

It is not a de Polignac number, because 21895695337 - 2³ = 21895695329 is a prime.

It is not a weakly prime, because it can be changed into another prime (21895695307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10947847668 + 10947847669.

It is an arithmetic number, because the mean of its divisors is an integer number (10947847669).

Almost surely, 2^21895695337 is an apocalyptic number.

It is an amenable number.

21895695337 is a deficient number, since it is larger than the sum of its proper divisors (1).

21895695337 is an equidigital number, since it uses as much as digits as its factorization.

21895695337 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12247200, while the sum is 58.

The spelling of 21895695337 in words is "twenty-one billion, eight hundred ninety-five million, six hundred ninety-five thousand, three hundred thirty-seven".