13212445806 has 48 divisors (see below), whose sum is σ = 33177351168. Its totient is φ = 3721813200.

The previous prime is 13212445801. The next prime is 13212445811. The reversal of 13212445806 is 60854421231.

It is a happy number.

13212445806 is a `hidden beast` number, since 1 + 32 + 1 + 2 + 44 + 580 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (13212445801) and next prime (13212445811).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13212445801) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 729510 + ... + 747401.

It is an arithmetic number, because the mean of its divisors is an integer number (691194816).

Almost surely, 2^13212445806 is an apocalyptic number.

13212445806 is an abundant number, since it is smaller than the sum of its proper divisors (19964905362).

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

13212445806 is a wasteful number, since it uses less digits than its factorization.

13212445806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1476997 (or 1476994 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The spelling of 13212445806 in words is "thirteen billion, two hundred twelve million, four hundred forty-five thousand, eight hundred six".