21375065413263 has 8 divisors (see below), whose sum is σ = 29482848846000. Its totient is φ = 13758662794688.

The previous prime is 21375065413237. The next prime is 21375065413313. The reversal of 21375065413263 is 36231456057312.

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 21375065413263 - 2¹⁷ = 21375065282191 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21375065417263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122845203438 + ... + 122845203611.

It is an arithmetic number, because the mean of its divisors is an integer number (3685356105750).

Almost surely, 2^{21375065413263} is an apocalyptic number.

21375065413263 is a deficient number, since it is larger than the sum of its proper divisors (8107783432737).

21375065413263 is a wasteful number, since it uses less digits than its factorization.

21375065413263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245690407081.

The product of its (nonzero) digits is 2721600, while the sum is 48.

The spelling of 21375065413263 in words is "twenty-one trillion, three hundred seventy-five billion, sixty-five million, four hundred thirteen thousand, two hundred sixty-three".