11907178889 has 2 divisors, whose sum is σ = 11907178890. Its totient is φ = 11907178888.

The previous prime is 11907178853. The next prime is 11907178931. The reversal of 11907178889 is 98887170911.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11907174400 + 4489 = 109120^2 + 67^2 .

It is an emirp because it is prime and its reverse (98887170911) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11907178889 - 2¹² = 11907174793 is a prime.

It is not a weakly prime, because it can be changed into another prime (11907174889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5953589444 + 5953589445.

It is an arithmetic number, because the mean of its divisors is an integer number (5953589445).

Almost surely, 2^11907178889 is an apocalyptic number.

It is an amenable number.

11907178889 is a deficient number, since it is larger than the sum of its proper divisors (1).

11907178889 is an equidigital number, since it uses as much as digits as its factorization.

11907178889 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2032128, while the sum is 59.

The spelling of 11907178889 in words is "eleven billion, nine hundred seven million, one hundred seventy-eight thousand, eight hundred eighty-nine".