11888895397 has 2 divisors, whose sum is σ = 11888895398. Its totient is φ = 11888895396.

The previous prime is 11888895391. The next prime is 11888895427. The reversal of 11888895397 is 79359888811.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6400160001 + 5488735396 = 80001^2 + 74086^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11888895397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11888895391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5944447698 + 5944447699.

It is an arithmetic number, because the mean of its divisors is an integer number (5944447699).

Almost surely, 2^11888895397 is an apocalyptic number.

It is an amenable number.

11888895397 is a deficient number, since it is larger than the sum of its proper divisors (1).

11888895397 is an equidigital number, since it uses as much as digits as its factorization.

11888895397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34836480, while the sum is 67.

The spelling of 11888895397 in words is "eleven billion, eight hundred eighty-eight million, eight hundred ninety-five thousand, three hundred ninety-seven".