8061291650 has 12 divisors (see below), whose sum is σ = 14994002562. Its totient is φ = 3224516640.

The previous prime is 8061291647. The next prime is 8061291673. The reversal of 8061291650 is 561921608.

It can be written as a sum of positive squares in 3 ways, for example, as 4003219441 + 4058072209 = 63271^2 + 63703^2 .

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

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, 80612867 + ... + 80612966.

Almost surely, 2^8061291650 is an apocalyptic number.

8061291650 is a deficient number, since it is larger than the sum of its proper divisors (6932710912).

8061291650 is a wasteful number, since it uses less digits than its factorization.

8061291650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161225845 (or 161225840 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 38.

The square root of 8061291650 is about 89784.6960790089. The cubic root of 8061291650 is about 2005.0946487575.

The spelling of 8061291650 in words is "eight billion, sixty-one million, two hundred ninety-one thousand, six hundred fifty".