961422866639 has 2 divisors, whose sum is σ = 961422866640. Its totient is φ = 961422866638.

The previous prime is 961422866587. The next prime is 961422866653. The reversal of 961422866639 is 936668224169.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-961422866639 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (961422766639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 480711433319 + 480711433320.

It is an arithmetic number, because the mean of its divisors is an integer number (480711433320).

Almost surely, 2^961422866639 is an apocalyptic number.

961422866639 is a deficient number, since it is larger than the sum of its proper divisors (1).

961422866639 is an equidigital number, since it uses as much as digits as its factorization.

961422866639 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40310784, while the sum is 62.

The spelling of 961422866639 in words is "nine hundred sixty-one billion, four hundred twenty-two million, eight hundred sixty-six thousand, six hundred thirty-nine".