969661192391 has 2 divisors, whose sum is σ = 969661192392. Its totient is φ = 969661192390.

The previous prime is 969661192349. The next prime is 969661192429. The reversal of 969661192391 is 193291166969.

969661192391 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-969661192391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (969661192301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 484830596195 + 484830596196.

It is an arithmetic number, because the mean of its divisors is an integer number (484830596196).

Almost surely, 2^969661192391 is an apocalyptic number.

969661192391 is a deficient number, since it is larger than the sum of its proper divisors (1).

969661192391 is an equidigital number, since it uses as much as digits as its factorization.

969661192391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8503056, while the sum is 62.

The spelling of 969661192391 in words is "nine hundred sixty-nine billion, six hundred sixty-one million, one hundred ninety-two thousand, three hundred ninety-one".