13407241867921 has 6 divisors (see below), whose sum is σ = 14736885689666. Its totient is φ = 12188401698000.

The previous prime is 13407241867909. The next prime is 13407241867931. The reversal of 13407241867921 is 12976814270431.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 12171062577025 + 1236179290896 = 3488705^2 + 1111836^2 .

It is not a de Polignac number, because 13407241867921 - 2¹³ = 13407241859729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13407241867931) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 55401825780 + ... + 55401826021.

Almost surely, 2^{13407241867921} is an apocalyptic number.

13407241867921 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13407241867921 is a deficient number, since it is larger than the sum of its proper divisors (1329643821745).

13407241867921 is a wasteful number, since it uses less digits than its factorization.

13407241867921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110803651823 (or 110803651812 counting only the distinct ones).

The product of its (nonzero) digits is 4064256, while the sum is 55.

The spelling of 13407241867921 in words is "thirteen trillion, four hundred seven billion, two hundred forty-one million, eight hundred sixty-seven thousand, nine hundred twenty-one".