21850573342 has 32 divisors (see below), whose sum is σ = 35456696352. Its totient is φ = 10039365504.

The previous prime is 21850573337. The next prime is 21850573351. The reversal of 21850573342 is 24337505812.

It is a junction number, because it is equal to n+sod(n) for n = 21850573295 and 21850573304.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9872628 + ... + 9874840.

It is an arithmetic number, because the mean of its divisors is an integer number (1108021761).

Almost surely, 2^21850573342 is an apocalyptic number.

21850573342 is a deficient number, since it is larger than the sum of its proper divisors (13606123010).

21850573342 is a wasteful number, since it uses less digits than its factorization.

21850573342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3772.

The product of its (nonzero) digits is 201600, while the sum is 40.

The spelling of 21850573342 in words is "twenty-one billion, eight hundred fifty million, five hundred seventy-three thousand, three hundred forty-two".