10661605596 has 36 divisors (see below), whose sum is σ = 27188677152. Its totient is φ = 3522417024.

The previous prime is 10661605583. The next prime is 10661605597. The reversal of 10661605596 is 69550616601.

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

It is a super-2 number, since 2×10661605596² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10661605597) 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, 1306356 + ... + 1314491.

It is an arithmetic number, because the mean of its divisors is an integer number (755241032).

Almost surely, 2^10661605596 is an apocalyptic number.

It is an amenable number.

10661605596 is an abundant number, since it is smaller than the sum of its proper divisors (16527071556).

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

10661605596 is a wasteful number, since it uses less digits than its factorization.

10661605596 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2620970 (or 2620965 counting only the distinct ones).

The product of its (nonzero) digits is 291600, while the sum is 45.

The spelling of 10661605596 in words is "ten billion, six hundred sixty-one million, six hundred five thousand, five hundred ninety-six".