21960318481193 has 4 divisors (see below), whose sum is σ = 21970711440468. Its totient is φ = 21949925521920.

The previous prime is 21960318481177. The next prime is 21960318481249. The reversal of 21960318481193 is 39118481306912.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 267937711129 + 21692380770064 = 517627^2 + 4657508^2 .

It is a cyclic number.

It is not a de Polignac number, because 21960318481193 - 2⁴ = 21960318481177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21960318471193) 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, 5196476468 + ... + 5196480693.

It is an arithmetic number, because the mean of its divisors is an integer number (5492677860117).

Almost surely, 2^{21960318481193} is an apocalyptic number.

It is an amenable number.

21960318481193 is a deficient number, since it is larger than the sum of its proper divisors (10392959275).

21960318481193 is a wasteful number, since it uses less digits than its factorization.

21960318481193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10392959274.

The product of its (nonzero) digits is 2239488, while the sum is 56.

The spelling of 21960318481193 in words is "twenty-one trillion, nine hundred sixty billion, three hundred eighteen million, four hundred eighty-one thousand, one hundred ninety-three".