10661059680 has 96 divisors (see below), whose sum is σ = 33603069024. Its totient is φ = 2841194496.

The previous prime is 10661059667. The next prime is 10661059697. The reversal of 10661059680 is 8695016601.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×10661059680² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 895044 + ... + 906876.

It is an arithmetic number, because the mean of its divisors is an integer number (350031969).

Almost surely, 2^10661059680 is an apocalyptic number.

10661059680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10661059680 is an abundant number, since it is smaller than the sum of its proper divisors (22942009344).

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

10661059680 is a wasteful number, since it uses less digits than its factorization.

10661059680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13728 (or 13720 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 42.

The spelling of 10661059680 in words is "ten billion, six hundred sixty-one million, fifty-nine thousand, six hundred eighty".