11881394407 has 2 divisors, whose sum is σ = 11881394408. Its totient is φ = 11881394406.

The previous prime is 11881394359. The next prime is 11881394411. The reversal of 11881394407 is 70449318811.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11881394407 - 2¹¹ = 11881392359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11881394477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5940697203 + 5940697204.

It is an arithmetic number, because the mean of its divisors is an integer number (5940697204).

Almost surely, 2^11881394407 is an apocalyptic number.

11881394407 is a deficient number, since it is larger than the sum of its proper divisors (1).

11881394407 is an equidigital number, since it uses as much as digits as its factorization.

11881394407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 193536, while the sum is 46.

The spelling of 11881394407 in words is "eleven billion, eight hundred eighty-one million, three hundred ninety-four thousand, four hundred seven".