10645320616 has 64 divisors (see below), whose sum is σ = 23691571200. Its totient is φ = 4389023232.

The previous prime is 10645320613. The next prime is 10645320659. The reversal of 10645320616 is 61602354601.

It is a super-2 number, since 2×10645320616² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10645320613) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 155545 + ... + 213271.

It is an arithmetic number, because the mean of its divisors is an integer number (370180800).

Almost surely, 2^10645320616 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10645320616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11845785600).

10645320616 is an abundant number, since it is smaller than the sum of its proper divisors (13046250584).

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

10645320616 is a wasteful number, since it uses less digits than its factorization.

10645320616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57866 (or 57862 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 34.

The spelling of 10645320616 in words is "ten billion, six hundred forty-five million, three hundred twenty thousand, six hundred sixteen".