21674307650 has 48 divisors (see below), whose sum is σ = 41337541728. Its totient is φ = 8450064000.

The previous prime is 21674307583. The next prime is 21674307679. The reversal of 21674307650 is 5670347612.

It is a super-2 number, since 2×21674307650² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 21674307598 and 21674307607.

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, 2379605 + ... + 2388695.

It is an arithmetic number, because the mean of its divisors is an integer number (861198786).

Almost surely, 2^21674307650 is an apocalyptic number.

21674307650 is a deficient number, since it is larger than the sum of its proper divisors (19663234078).

21674307650 is a wasteful number, since it uses less digits than its factorization.

21674307650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10307 (or 10302 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 41.

The spelling of 21674307650 in words is "twenty-one billion, six hundred seventy-four million, three hundred seven thousand, six hundred fifty".