11887493399391 has 16 divisors (see below), whose sum is σ = 15854528608128. Its totient is φ = 7922727170400.

The previous prime is 11887493399377. The next prime is 11887493399401. The reversal of 11887493399391 is 19399339478811.

It is not a de Polignac number, because 11887493399391 - 2¹⁷ = 11887493268319 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11887493399351) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 258058501 + ... + 258104561.

It is an arithmetic number, because the mean of its divisors is an integer number (990908038008).

Almost surely, 2^{11887493399391} is an apocalyptic number.

11887493399391 is a deficient number, since it is larger than the sum of its proper divisors (3967035208737).

11887493399391 is a wasteful number, since it uses less digits than its factorization.

11887493399391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68822.

The product of its digits is 317447424, while the sum is 75.

The spelling of 11887493399391 in words is "eleven trillion, eight hundred eighty-seven billion, four hundred ninety-three million, three hundred ninety-nine thousand, three hundred ninety-one".