10887161809 has 2 divisors, whose sum is σ = 10887161810. Its totient is φ = 10887161808.

The previous prime is 10887161801. The next prime is 10887161821. The reversal of 10887161809 is 90816178801.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10753690000 + 133471809 = 103700^2 + 11553^2 .

It is a cyclic number.

It is not a de Polignac number, because 10887161809 - 2³ = 10887161801 is a prime.

It is not a weakly prime, because it can be changed into another prime (10887161801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5443580904 + 5443580905.

It is an arithmetic number, because the mean of its divisors is an integer number (5443580905).

Almost surely, 2^10887161809 is an apocalyptic number.

It is an amenable number.

10887161809 is a deficient number, since it is larger than the sum of its proper divisors (1).

10887161809 is an equidigital number, since it uses as much as digits as its factorization.

10887161809 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 49.

The spelling of 10887161809 in words is "ten billion, eight hundred eighty-seven million, one hundred sixty-one thousand, eight hundred nine".