13000650650 has 24 divisors (see below), whose sum is σ = 26041304604. Its totient is φ = 4800240000.

The previous prime is 13000650643. The next prime is 13000650667. The reversal of 13000650650 is 5605600031.

It can be written as a sum of positive squares in 6 ways, for example, as 5546227729 + 7454422921 = 74473^2 + 86339^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

13000650650 is a modest number, since divided by 650650 gives 13000 as remainder.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9999851 + ... + 10001150.

Almost surely, 2^13000650650 is an apocalyptic number.

13000650650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13000650650 is an abundant number, since it is smaller than the sum of its proper divisors (13040653954).

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

13000650650 is a wasteful number, since it uses less digits than its factorization.

13000650650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20001026 (or 20001021 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 26.

The spelling of 13000650650 in words is "thirteen billion, six hundred fifty thousand, six hundred fifty".