21850018335 has 48 divisors (see below), whose sum is σ = 40045824000. Its totient is φ = 10990406592.

The previous prime is 21850018291. The next prime is 21850018343. The reversal of 21850018335 is 53381005812.

It is not a de Polignac number, because 21850018335 - 2¹⁵ = 21849985567 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21850018335.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 133366 + ... + 247964.

It is an arithmetic number, because the mean of its divisors is an integer number (834288000).

Almost surely, 2^21850018335 is an apocalyptic number.

21850018335 is a deficient number, since it is larger than the sum of its proper divisors (18195805665).

21850018335 is a wasteful number, since it uses less digits than its factorization.

21850018335 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114852 (or 114849 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The spelling of 21850018335 in words is "twenty-one billion, eight hundred fifty million, eighteen thousand, three hundred thirty-five".