11886457091 has 2 divisors, whose sum is σ = 11886457092. Its totient is φ = 11886457090.

The previous prime is 11886457073. The next prime is 11886457097. The reversal of 11886457091 is 19075468811.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11886457091 - 2²² = 11882262787 is a prime.

It is a super-3 number, since 3×11886457091³ (a number of 31 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (11886457097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5943228545 + 5943228546.

It is an arithmetic number, because the mean of its divisors is an integer number (5943228546).

Almost surely, 2^11886457091 is an apocalyptic number.

11886457091 is a deficient number, since it is larger than the sum of its proper divisors (1).

11886457091 is an equidigital number, since it uses as much as digits as its factorization.

11886457091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 483840, while the sum is 50.

The spelling of 11886457091 in words is "eleven billion, eight hundred eighty-six million, four hundred fifty-seven thousand, ninety-one".