10661505016 has 64 divisors (see below), whose sum is σ = 21115339200. Its totient is φ = 5044923520.

The previous prime is 10661504993. The next prime is 10661505059. The reversal of 10661505016 is 61050516601.

It is a super-2 number, since 2×10661505016² (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, 10340421 + ... + 10341451.

It is an arithmetic number, because the mean of its divisors is an integer number (329927175).

Almost surely, 2^10661505016 is an apocalyptic number.

It is an amenable number.

10661505016 is a deficient number, since it is larger than the sum of its proper divisors (10453834184).

10661505016 is an equidigital number, since it uses as much as digits as its factorization.

10661505016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1177 (or 1115 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 31.

The spelling of 10661505016 in words is "ten billion, six hundred sixty-one million, five hundred five thousand, sixteen".