21364767054127 has 4 divisors (see below), whose sum is σ = 24416876633296. Its totient is φ = 18312657474960.

The previous prime is 21364767054107. The next prime is 21364767054143. The reversal of 21364767054127 is 72145076746312.

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 21364767054127 - 2³⁵ = 21330407315759 is a prime.

It is a super-2 number, since 2×21364767054127² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21364767054107) 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, 1526054789574 + ... + 1526054789587.

It is an arithmetic number, because the mean of its divisors is an integer number (6104219158324).

Almost surely, 2^{21364767054127} is an apocalyptic number.

21364767054127 is a deficient number, since it is larger than the sum of its proper divisors (3052109579169).

21364767054127 is an equidigital number, since it uses as much as digits as its factorization.

21364767054127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3052109579168.

The product of its (nonzero) digits is 11854080, while the sum is 55.

The spelling of 21364767054127 in words is "twenty-one trillion, three hundred sixty-four billion, seven hundred sixty-seven million, fifty-four thousand, one hundred twenty-seven".