21850883734 has 16 divisors (see below), whose sum is σ = 34707776400. Its totient is φ = 10281752064.

The previous prime is 21850883713. The next prime is 21850883753. The reversal of 21850883734 is 43738805812.

It is a super-2 number, since 2×21850883734² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 403582 + ... + 454510.

It is an arithmetic number, because the mean of its divisors is an integer number (2169236025).

Almost surely, 2^21850883734 is an apocalyptic number.

21850883734 is a deficient number, since it is larger than the sum of its proper divisors (12856892666).

21850883734 is a wasteful number, since it uses less digits than its factorization.

21850883734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63567.

The product of its (nonzero) digits is 1290240, while the sum is 49.

The spelling of 21850883734 in words is "twenty-one billion, eight hundred fifty million, eight hundred eighty-three thousand, seven hundred thirty-four".