21862997707 has 2 divisors, whose sum is σ = 21862997708. Its totient is φ = 21862997706.

The previous prime is 21862997693. The next prime is 21862997719. The reversal of 21862997707 is 70779926812.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21862997707 - 2²⁷ = 21728779979 is a prime.

It is not a weakly prime, because it can be changed into another prime (21862997207) 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, 10931498853 + 10931498854.

It is an arithmetic number, because the mean of its divisors is an integer number (10931498854).

Almost surely, 2^21862997707 is an apocalyptic number.

21862997707 is a deficient number, since it is larger than the sum of its proper divisors (1).

21862997707 is an equidigital number, since it uses as much as digits as its factorization.

21862997707 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5334336, while the sum is 58.

The spelling of 21862997707 in words is "twenty-one billion, eight hundred sixty-two million, nine hundred ninety-seven thousand, seven hundred seven".