13541269940021 has 4 divisors (see below), whose sum is σ = 13630947224544. Its totient is φ = 13451592655500.

The previous prime is 13541269939991. The next prime is 13541269940089. The reversal of 13541269940021 is 12004996214531.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13541269940021 - 2⁶ = 13541269939957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13541269949021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44838642035 + ... + 44838642336.

It is an arithmetic number, because the mean of its divisors is an integer number (3407736806136).

Almost surely, 2^{13541269940021} is an apocalyptic number.

It is an amenable number.

13541269940021 is a deficient number, since it is larger than the sum of its proper divisors (89677284523).

13541269940021 is an equidigital number, since it uses as much as digits as its factorization.

13541269940021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89677284522.

The product of its (nonzero) digits is 466560, while the sum is 47.

The spelling of 13541269940021 in words is "thirteen trillion, five hundred forty-one billion, two hundred sixty-nine million, nine hundred forty thousand, twenty-one".