61000665600650 has 12 divisors (see below), whose sum is σ = 113461238017302. Its totient is φ = 24400266240240.

The previous prime is 61000665600647. The next prime is 61000665600739. The reversal of 61000665600650 is 5600656600016.

It can be written as a sum of positive squares in 3 ways, for example, as 53528845628281 + 7471819972369 = 7316341^2 + 2733463^2 .

It is a junction number, because it is equal to n+sod(n) for n = 61000665600598 and 61000665600607.

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, 610006655957 + ... + 610006656056.

Almost surely, 2^{61000665600650} is an apocalyptic number.

61000665600650 is a deficient number, since it is larger than the sum of its proper divisors (52460572416652).

61000665600650 is a wasteful number, since it uses less digits than its factorization.

61000665600650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1220013312025 (or 1220013312020 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 41.

The spelling of 61000665600650 in words is "sixty-one trillion, six hundred sixty-five million, six hundred thousand, six hundred fifty".