21127323046649 has 8 divisors (see below), whose sum is σ = 21509904265920. Its totient is φ = 20747790283696.

The previous prime is 21127323046619. The next prime is 21127323046733. The reversal of 21127323046649 is 94664032372112.

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

It is a de Polignac number, because none of the positive numbers 2^k-21127323046649 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21127323046597 and 21127323046606.

It is not an unprimeable number, because it can be changed into a prime (21127323046619) 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, 762100094 + ... + 762127815.

It is an arithmetic number, because the mean of its divisors is an integer number (2688738033240).

Almost surely, 2^{21127323046649} is an apocalyptic number.

It is an amenable number.

21127323046649 is a deficient number, since it is larger than the sum of its proper divisors (382581219271).

21127323046649 is a wasteful number, since it uses less digits than its factorization.

21127323046649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1524228159.

The product of its (nonzero) digits is 2612736, while the sum is 50.

The spelling of 21127323046649 in words is "twenty-one trillion, one hundred twenty-seven billion, three hundred twenty-three million, forty-six thousand, six hundred forty-nine".