21613444214246 has 8 divisors (see below), whose sum is σ = 32754394840440. Its totient is φ = 10695312600768.

The previous prime is 21613444214231. The next prime is 21613444214279. The reversal of 21613444214246 is 64241244431612.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 21613444214197 and 21613444214206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55704752936 + ... + 55704753323.

It is an arithmetic number, because the mean of its divisors is an integer number (4094299355055).

Almost surely, 2^{21613444214246} is an apocalyptic number.

21613444214246 is a deficient number, since it is larger than the sum of its proper divisors (11140950626194).

21613444214246 is a wasteful number, since it uses less digits than its factorization.

21613444214246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111409506358.

The product of its digits is 884736, while the sum is 44.

Adding to 21613444214246 its reverse (64241244431612), we get a palindrome (85854688645858).

The spelling of 21613444214246 in words is "twenty-one trillion, six hundred thirteen billion, four hundred forty-four million, two hundred fourteen thousand, two hundred forty-six".