10661899116 has 24 divisors (see below), whose sum is σ = 27139379904. Its totient is φ = 3230878480.

The previous prime is 10661899111. The next prime is 10661899139. The reversal of 10661899116 is 61199816601.

It is a happy number.

It is a super-2 number, since 2×10661899116² (a number of 21 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (10661899111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40385850 + ... + 40386113.

It is an arithmetic number, because the mean of its divisors is an integer number (1130807496).

Almost surely, 2^10661899116 is an apocalyptic number.

It is an amenable number.

10661899116 is an abundant number, since it is smaller than the sum of its proper divisors (16477480788).

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

10661899116 is a wasteful number, since it uses less digits than its factorization.

10661899116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80771981 (or 80771979 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 48.

The spelling of 10661899116 in words is "ten billion, six hundred sixty-one million, eight hundred ninety-nine thousand, one hundred sixteen".