21293486050 has 24 divisors (see below), whose sum is σ = 40526955216. Its totient is φ = 8319314640.

The previous prime is 21293486021. The next prime is 21293486083. The reversal of 21293486050 is 5068439212.

It is a junction number, because it is equal to n+sod(n) for n = 21293485994 and 21293486012.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4949824 + ... + 4954123.

It is an arithmetic number, because the mean of its divisors is an integer number (1688623134).

Almost surely, 2^21293486050 is an apocalyptic number.

21293486050 is a deficient number, since it is larger than the sum of its proper divisors (19233469166).

21293486050 is a wasteful number, since it uses less digits than its factorization.

21293486050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9904002 (or 9903997 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 40.

The spelling of 21293486050 in words is "twenty-one billion, two hundred ninety-three million, four hundred eighty-six thousand, fifty".