21962794179629 has 2 divisors, whose sum is σ = 21962794179630. Its totient is φ = 21962794179628.

The previous prime is 21962794179581. The next prime is 21962794179637. The reversal of 21962794179629 is 92697149726912.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21921545382025 + 41248797604 = 4682045^2 + 203098^2 .

It is a cyclic number.

It is not a de Polignac number, because 21962794179629 - 2²⁴ = 21962777402413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21962794179829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10981397089814 + 10981397089815.

It is an arithmetic number, because the mean of its divisors is an integer number (10981397089815).

Almost surely, 2^{21962794179629} is an apocalyptic number.

It is an amenable number.

21962794179629 is a deficient number, since it is larger than the sum of its proper divisors (1).

21962794179629 is an equidigital number, since it uses as much as digits as its factorization.

21962794179629 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 370355328, while the sum is 74.

The spelling of 21962794179629 in words is "twenty-one trillion, nine hundred sixty-two billion, seven hundred ninety-four million, one hundred seventy-nine thousand, six hundred twenty-nine".