13065961320 has 96 divisors (see below), whose sum is σ = 44962299720. Its totient is φ = 3279298560.

The previous prime is 13065961309. The next prime is 13065961333. The reversal of 13065961320 is 2316956031.

13065961320 is a `hidden beast` number, since 1 + 30 + 6 + 5 + 9 + 613 + 2 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 8450389476 + 4615571844 = 91926^2 + 67938^2 .

It is a super-2 number, since 2×13065961320² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1061361 + ... + 1073600.

Almost surely, 2^13065961320 is an apocalyptic number.

13065961320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13065961320 is an abundant number, since it is smaller than the sum of its proper divisors (31896338400).

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

13065961320 is a wasteful number, since it uses less digits than its factorization.

13065961320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2134995 (or 2134988 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 36.

The spelling of 13065961320 in words is "thirteen billion, sixty-five million, nine hundred sixty-one thousand, three hundred twenty".