8063057781 has 6 divisors (see below), whose sum is σ = 11646639030. Its totient is φ = 5375371848.

The previous prime is 8063057777. The next prime is 8063057803. The reversal of 8063057781 is 1877503608.

8063057781 is a `hidden beast` number, since 8 + 0 + 630 + 5 + 7 + 7 + 8 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 4905741681 + 3157316100 = 70041^2 + 56190^2 .

It is not a de Polignac number, because 8063057781 - 2² = 8063057777 is a prime.

It is a super-2 number, since 2×8063057781² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8063057771) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 447947646 + ... + 447947663.

It is an arithmetic number, because the mean of its divisors is an integer number (1941106505).

Almost surely, 2^8063057781 is an apocalyptic number.

It is an amenable number.

8063057781 is a deficient number, since it is larger than the sum of its proper divisors (3583581249).

8063057781 is a wasteful number, since it uses less digits than its factorization.

8063057781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 895895315 (or 895895312 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 45.

The square root of 8063057781 is about 89794.5309080681. The cubic root of 8063057781 is about 2005.2410686857.

The spelling of 8063057781 in words is "eight billion, sixty-three million, fifty-seven thousand, seven hundred eighty-one".