13405025266446 has 64 divisors (see below), whose sum is σ = 29655641180160. Its totient is φ = 4005447459840.

The previous prime is 13405025266429. The next prime is 13405025266481. The reversal of 13405025266446 is 64466252050431.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 13405025266395 and 13405025266404.

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, 18379491 + ... + 19094913.

It is an arithmetic number, because the mean of its divisors is an integer number (463369393440).

Almost surely, 2^{13405025266446} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13405025266446, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14827820590080).

13405025266446 is an abundant number, since it is smaller than the sum of its proper divisors (16250615913714).

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

13405025266446 is a wasteful number, since it uses less digits than its factorization.

13405025266446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 719401.

The product of its (nonzero) digits is 4147200, while the sum is 48.

The spelling of 13405025266446 in words is "thirteen trillion, four hundred five billion, twenty-five million, two hundred sixty-six thousand, four hundred forty-six".