11860994881 has 4 divisors (see below), whose sum is σ = 11861835952. Its totient is φ = 11860153812.

The previous prime is 11860994869. The next prime is 11860994927. The reversal of 11860994881 is 18849906811.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 18849906811 = 1787 ⋅10548353.

It is a cyclic number.

It is not a de Polignac number, because 11860994881 - 2¹¹ = 11860992833 is a prime.

It is a super-2 number, since 2×11860994881² (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 (11860994801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 399015 + ... + 427708.

It is an arithmetic number, because the mean of its divisors is an integer number (2965458988).

Almost surely, 2^11860994881 is an apocalyptic number.

It is an amenable number.

11860994881 is a deficient number, since it is larger than the sum of its proper divisors (841071).

11860994881 is an equidigital number, since it uses as much as digits as its factorization.

11860994881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 841070.

The product of its (nonzero) digits is 995328, while the sum is 55.

The spelling of 11860994881 in words is "eleven billion, eight hundred sixty million, nine hundred ninety-four thousand, eight hundred eighty-one".