13401072556806 has 64 divisors (see below), whose sum is σ = 29741309934336. Its totient is φ = 3991228982400.

The previous prime is 13401072556799. The next prime is 13401072556889. The reversal of 13401072556806 is 60865527010431.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3837901 + ... + 6444503.

It is an arithmetic number, because the mean of its divisors is an integer number (464707967724).

Almost surely, 2^{13401072556806} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13401072556806, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14870654967168).

13401072556806 is an abundant number, since it is smaller than the sum of its proper divisors (16340237377530).

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

13401072556806 is a wasteful number, since it uses less digits than its factorization.

13401072556806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2607957.

The product of its (nonzero) digits is 1209600, while the sum is 48.

The spelling of 13401072556806 in words is "thirteen trillion, four hundred one billion, seventy-two million, five hundred fifty-six thousand, eight hundred six".