21629284850 has 24 divisors (see below), whose sum is σ = 41086441728. Its totient is φ = 8467634000.

The previous prime is 21629284823. The next prime is 21629284867. The reversal of 21629284850 is 5848292612.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a junction number, because it is equal to n+sod(n) for n = 21629284795 and 21629284804.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4599626 + ... + 4604325.

It is an arithmetic number, because the mean of its divisors is an integer number (1711935072).

Almost surely, 2^21629284850 is an apocalyptic number.

21629284850 is a deficient number, since it is larger than the sum of its proper divisors (19457156878).

21629284850 is a wasteful number, since it uses less digits than its factorization.

21629284850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9204010 (or 9204005 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 47.

The spelling of 21629284850 in words is "twenty-one billion, six hundred twenty-nine million, two hundred eighty-four thousand, eight hundred fifty".