13256321472 has 84 divisors (see below), whose sum is σ = 40231990656. Its totient is φ = 4158842880.

The previous prime is 13256321467. The next prime is 13256321473. The reversal of 13256321472 is 27412365231.

13256321472 is a `hidden beast` number, since 1 + 3 + 2 + 5 + 632 + 14 + 7 + 2 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13256321473) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 667104 + ... + 686687.

Almost surely, 2^13256321472 is an apocalyptic number.

13256321472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13256321472 is an abundant number, since it is smaller than the sum of its proper divisors (26975669184).

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

13256321472 is a wasteful number, since it uses less digits than its factorization.

13256321472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1353826 (or 1353813 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

It can be divided in two parts, 1325632 and 1472, that added together give a square (1327104 = 1152²).

The spelling of 13256321472 in words is "thirteen billion, two hundred fifty-six million, three hundred twenty-one thousand, four hundred seventy-two".