11200005881 has 2 divisors, whose sum is σ = 11200005882. Its totient is φ = 11200005880.

The previous prime is 11200005877. The next prime is 11200005899. The reversal of 11200005881 is 18850000211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10280946025 + 919059856 = 101395^2 + 30316^2 .

It is a cyclic number.

It is not a de Polignac number, because 11200005881 - 2² = 11200005877 is a prime.

It is a super-2 number, since 2×11200005881² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 11200005881.

It is not a weakly prime, because it can be changed into another prime (11200005821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5600002940 + 5600002941.

It is an arithmetic number, because the mean of its divisors is an integer number (5600002941).

Almost surely, 2^11200005881 is an apocalyptic number.

It is an amenable number.

11200005881 is a deficient number, since it is larger than the sum of its proper divisors (1).

11200005881 is an equidigital number, since it uses as much as digits as its factorization.

11200005881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 640, while the sum is 26.

The spelling of 11200005881 in words is "eleven billion, two hundred million, five thousand, eight hundred eighty-one".