21073206050 has 48 divisors (see below), whose sum is σ = 44046555840. Its totient is φ = 7442571840.

The previous prime is 21073206043. The next prime is 21073206157. The reversal of 21073206050 is 5060237012.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 689840 + ... + 719739.

It is an arithmetic number, because the mean of its divisors is an integer number (917636580).

Almost surely, 2^21073206050 is an apocalyptic number.

21073206050 is an abundant number, since it is smaller than the sum of its proper divisors (22973349790).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21073206050 is a wasteful number, since it uses less digits than its factorization.

21073206050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1409627 (or 1409622 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 26.

The spelling of 21073206050 in words is "twenty-one billion, seventy-three million, two hundred six thousand, fifty".