13221590040 has 128 divisors (see below), whose sum is σ = 46391616000. Its totient is φ = 3340185984.

The previous prime is 13221590023. The next prime is 13221590051. The reversal of 13221590040 is 4009512231.

13221590040 is a `hidden beast` number, since 1 + 32 + 2 + 1 + 590 + 0 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 13221589986 and 13221590013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 301644 + ... + 342683.

It is an arithmetic number, because the mean of its divisors is an integer number (362434500).

Almost surely, 2^13221590040 is an apocalyptic number.

13221590040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13221590040 is an abundant number, since it is smaller than the sum of its proper divisors (33170025960).

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

13221590040 is a wasteful number, since it uses less digits than its factorization.

13221590040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644366 (or 644356 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The spelling of 13221590040 in words is "thirteen billion, two hundred twenty-one million, five hundred ninety thousand, forty".