10811869452 has 36 divisors (see below), whose sum is σ = 27406164240. Its totient is φ = 3593913312.

The previous prime is 10811869451. The next prime is 10811869477. The reversal of 10811869452 is 25496811801.

It is a happy number.

10811869452 is a `hidden beast` number, since 10 + 8 + 1 + 186 + 9 + 452 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 10811869398 and 10811869407.

It is not an unprimeable number, because it can be changed into a prime (10811869451) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 405363 + ... + 431210.

It is an arithmetic number, because the mean of its divisors is an integer number (761282340).

Almost surely, 2^10811869452 is an apocalyptic number.

10811869452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

10811869452 is an abundant number, since it is smaller than the sum of its proper divisors (16594294788).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10811869452 is a wasteful number, since it uses less digits than its factorization.

10811869452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 836942 (or 836937 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 45.

The spelling of 10811869452 in words is "ten billion, eight hundred eleven million, eight hundred sixty-nine thousand, four hundred fifty-two".