21373540264013 has 8 divisors (see below), whose sum is σ = 24432391152960. Its totient is φ = 18316061373600.

The previous prime is 21373540263973. The next prime is 21373540264033. The reversal of 21373540264013 is 31046204537312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21373540264013 - 2¹⁰ = 21373540262989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21373540264033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 342966248 + ... + 343028561.

It is an arithmetic number, because the mean of its divisors is an integer number (3054048894120).

Almost surely, 2^{21373540264013} is an apocalyptic number.

It is an amenable number.

21373540264013 is a deficient number, since it is larger than the sum of its proper divisors (3058850888947).

21373540264013 is an equidigital number, since it uses as much as digits as its factorization.

21373540264013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 685999267.

The product of its (nonzero) digits is 362880, while the sum is 41.

The spelling of 21373540264013 in words is "twenty-one trillion, three hundred seventy-three billion, five hundred forty million, two hundred sixty-four thousand, thirteen".