11954695391 has 2 divisors, whose sum is σ = 11954695392. Its totient is φ = 11954695390.

The previous prime is 11954695381. The next prime is 11954695453. The reversal of 11954695391 is 19359645911.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11954695391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11954695321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5977347695 + 5977347696.

It is an arithmetic number, because the mean of its divisors is an integer number (5977347696).

Almost surely, 2^11954695391 is an apocalyptic number.

11954695391 is a deficient number, since it is larger than the sum of its proper divisors (1).

11954695391 is an equidigital number, since it uses as much as digits as its factorization.

11954695391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1312200, while the sum is 53.

The spelling of 11954695391 in words is "eleven billion, nine hundred fifty-four million, six hundred ninety-five thousand, three hundred ninety-one".