21393439180883 has 8 divisors (see below), whose sum is σ = 26672339758080. Its totient is φ = 16670212348680.

The previous prime is 21393439180879. The next prime is 21393439180901. The reversal of 21393439180883 is 38808193439312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21393439180883 - 2² = 21393439180879 is a prime.

It is a super-2 number, since 2×21393439180883² (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 (21393439180873) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 138918436163 + ... + 138918436316.

It is an arithmetic number, because the mean of its divisors is an integer number (3334042469760).

Almost surely, 2^{21393439180883} is an apocalyptic number.

21393439180883 is a deficient number, since it is larger than the sum of its proper divisors (5278900577197).

21393439180883 is a wasteful number, since it uses less digits than its factorization.

21393439180883 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277836872497.

The product of its (nonzero) digits is 26873856, while the sum is 62.

The spelling of 21393439180883 in words is "twenty-one trillion, three hundred ninety-three billion, four hundred thirty-nine million, one hundred eighty thousand, eight hundred eighty-three".