40663586650 has 12 divisors (see below), whose sum is σ = 75634271262. Its totient is φ = 16265434640.

The previous prime is 40663586629. The next prime is 40663586681. The reversal of 40663586650 is 5668536604.

It can be written as a sum of positive squares in 3 ways, for example, as 27505890801 + 13157695849 = 165849^2 + 114707^2 .

It is a junction number, because it is equal to n+sod(n) for n = 40663586594 and 40663586603.

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, 406635817 + ... + 406635916.

Almost surely, 2^40663586650 is an apocalyptic number.

40663586650 is a deficient number, since it is larger than the sum of its proper divisors (34970684612).

40663586650 is a wasteful number, since it uses less digits than its factorization.

40663586650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 813271745 (or 813271740 counting only the distinct ones).

The product of its (nonzero) digits is 3110400, while the sum is 49.

The spelling of 40663586650 in words is "forty billion, six hundred sixty-three million, five hundred eighty-six thousand, six hundred fifty".