13045320040 has 32 divisors (see below), whose sum is σ = 29357316360. Its totient is φ = 5217177600.

The previous prime is 13045320037. The next prime is 13045320061. The reversal of 13045320040 is 4002354031.

It can be written as a sum of positive squares in 4 ways, for example, as 8096760324 + 4948559716 = 89982^2 + 70346^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13045319993 and 13045320020.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 218200 + ... + 271480.

Almost surely, 2^13045320040 is an apocalyptic number.

13045320040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13045320040 is an abundant number, since it is smaller than the sum of its proper divisors (16311996320).

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

13045320040 is a wasteful number, since it uses less digits than its factorization.

13045320040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59413 (or 59409 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

Adding to 13045320040 its reverse (4002354031), we get a palindrome (17047674071).

The spelling of 13045320040 in words is "thirteen billion, forty-five million, three hundred twenty thousand, forty".