20066237650 has 12 divisors (see below), whose sum is σ = 37323202122. Its totient is φ = 8026495040.

The previous prime is 20066237629. The next prime is 20066237683. The reversal of 20066237650 is 5673266002.

It can be written as a sum of positive squares in 3 ways, for example, as 12978449929 + 7087787721 = 113923^2 + 84189^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 200662327 + ... + 200662426.

Almost surely, 2^20066237650 is an apocalyptic number.

20066237650 is a deficient number, since it is larger than the sum of its proper divisors (17256964472).

20066237650 is a wasteful number, since it uses less digits than its factorization.

20066237650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401324765 (or 401324760 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 37.

The spelling of 20066237650 in words is "twenty billion, sixty-six million, two hundred thirty-seven thousand, six hundred fifty".