13003645620 has 48 divisors (see below), whose sum is σ = 41611667328. Its totient is φ = 2972261760.

The previous prime is 13003645583. The next prime is 13003645673. The reversal of 13003645620 is 2654630031.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 15480111 + ... + 15480950.

It is an arithmetic number, because the mean of its divisors is an integer number (866909736).

Almost surely, 2^13003645620 is an apocalyptic number.

13003645620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13003645620 is an abundant number, since it is smaller than the sum of its proper divisors (28608021708).

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

13003645620 is a wasteful number, since it uses less digits than its factorization.

13003645620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30961080 (or 30961078 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 30.

The spelling of 13003645620 in words is "thirteen billion, three million, six hundred forty-five thousand, six hundred twenty".