21947701146367 has 4 divisors (see below), whose sum is σ = 22901949022320. Its totient is φ = 20993453270416.

The previous prime is 21947701146307. The next prime is 21947701146373. The reversal of 21947701146367 is 76364110774912.

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 21947701146367 - 2³¹ = 21945553662719 is a prime.

It is a super-2 number, since 2×21947701146367² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21947701146307) 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, 477123937942 + ... + 477123937987.

It is an arithmetic number, because the mean of its divisors is an integer number (5725487255580).

Almost surely, 2^{21947701146367} is an apocalyptic number.

21947701146367 is a deficient number, since it is larger than the sum of its proper divisors (954247875953).

21947701146367 is an equidigital number, since it uses as much as digits as its factorization.

21947701146367 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 954247875952.

The product of its (nonzero) digits is 10668672, while the sum is 58.

The spelling of 21947701146367 in words is "twenty-one trillion, nine hundred forty-seven billion, seven hundred one million, one hundred forty-six thousand, three hundred sixty-seven".