21050744313707 has 4 divisors (see below), whose sum is σ = 21051203711976. Its totient is φ = 21050284915440.

The previous prime is 21050744313667. The next prime is 21050744313793. The reversal of 21050744313707 is 70731344705012.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21050744313707 - 2²⁰ = 21050743265131 is a prime.

It is a super-2 number, since 2×21050744313707² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21050744319707) 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, 229630394 + ... + 229722047.

It is an arithmetic number, because the mean of its divisors is an integer number (5262800927994).

Almost surely, 2^{21050744313707} is an apocalyptic number.

21050744313707 is a deficient number, since it is larger than the sum of its proper divisors (459398269).

21050744313707 is an equidigital number, since it uses as much as digits as its factorization.

21050744313707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459398268.

The product of its (nonzero) digits is 493920, while the sum is 44.

The spelling of 21050744313707 in words is "twenty-one trillion, fifty billion, seven hundred forty-four million, three hundred thirteen thousand, seven hundred seven".