11801800681 has 8 divisors (see below), whose sum is σ = 12890232000. Its totient is φ = 10715959440.

The previous prime is 11801800663. The next prime is 11801800711. The reversal of 11801800681 is 18600810811.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11801800681 - 2⁵ = 11801800649 is a prime.

It is a super-2 number, since 2×11801800681² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11801800651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 637981 + ... + 656218.

It is an arithmetic number, because the mean of its divisors is an integer number (1611279000).

Almost surely, 2^11801800681 is an apocalyptic number.

11801800681 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11801800681 is a deficient number, since it is larger than the sum of its proper divisors (1088431319).

11801800681 is a wasteful number, since it uses less digits than its factorization.

11801800681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1295039.

The product of its (nonzero) digits is 3072, while the sum is 34.

The spelling of 11801800681 in words is "eleven billion, eight hundred one million, eight hundred thousand, six hundred eighty-one".