13211456261456 has 20 divisors (see below), whose sum is σ = 27102913948692. Its totient is φ = 6217155887616.

The previous prime is 13211456261449. The next prime is 13211456261491. The reversal of 13211456261456 is 65416265411231.

It can be written as a sum of positive squares in 2 ways, for example, as 7390894704400 + 5820561557056 = 2718620^2 + 2412584^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 13211456261456.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24285764915 + ... + 24285765458.

Almost surely, 2^{13211456261456} is an apocalyptic number.

13211456261456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

13211456261456 is an abundant number, since it is smaller than the sum of its proper divisors (13891457687236).

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

13211456261456 is a wasteful number, since it uses less digits than its factorization.

13211456261456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48571530398 (or 48571530392 counting only the distinct ones).

The product of its digits is 1036800, while the sum is 47.

The spelling of 13211456261456 in words is "thirteen trillion, two hundred eleven billion, four hundred fifty-six million, two hundred sixty-one thousand, four hundred fifty-six".