11801063881 has 2 divisors, whose sum is σ = 11801063882. Its totient is φ = 11801063880.

The previous prime is 11801063821. The next prime is 11801063903. The reversal of 11801063881 is 18836010811.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11730839481 + 70224400 = 108309^2 + 8380^2 .

It is a cyclic number.

It is not a de Polignac number, because 11801063881 - 2¹³ = 11801055689 is a prime.

It is a super-3 number, since 3×11801063881³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 11801063881.

It is not a weakly prime, because it can be changed into another prime (11801063821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5900531940 + 5900531941.

It is an arithmetic number, because the mean of its divisors is an integer number (5900531941).

Almost surely, 2^11801063881 is an apocalyptic number.

It is an amenable number.

11801063881 is a deficient number, since it is larger than the sum of its proper divisors (1).

11801063881 is an equidigital number, since it uses as much as digits as its factorization.

11801063881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9216, while the sum is 37.

The spelling of 11801063881 in words is "eleven billion, eight hundred one million, sixty-three thousand, eight hundred eighty-one".