20549703650 has 48 divisors (see below), whose sum is σ = 45981908160. Its totient is φ = 6674788800.

The previous prime is 20549703623. The next prime is 20549703721. The reversal of 20549703650 is 5630794502.

It is a junction number, because it is equal to n+sod(n) for n = 20549703598 and 20549703607.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1538441 + ... + 1551740.

It is an arithmetic number, because the mean of its divisors is an integer number (957956420).

Almost surely, 2^20549703650 is an apocalyptic number.

20549703650 is an abundant number, since it is smaller than the sum of its proper divisors (25432204510).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20549703650 is a wasteful number, since it uses less digits than its factorization.

20549703650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3090219 (or 3090214 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 41.

The spelling of 20549703650 in words is "twenty billion, five hundred forty-nine million, seven hundred three thousand, six hundred fifty".