8050506077781 has 48 divisors (see below), whose sum is σ = 12261097280640. Its totient is φ = 5075994107520.

The previous prime is 8050506077767. The next prime is 8050506077821. The reversal of 8050506077781 is 1877706050508.

It is a happy number.

8050506077781 is a `hidden beast` number, since 8 + 0 + 50 + 506 + 0 + 7 + 7 + 7 + 81 = 666.

It is not a de Polignac number, because 8050506077781 - 2⁵ = 8050506077749 is a prime.

It is a super-2 number, since 2×8050506077781² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8050506072781) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 423411631 + ... + 423430643.

It is an arithmetic number, because the mean of its divisors is an integer number (255439526680).

Almost surely, 2^{8050506077781} is an apocalyptic number.

It is an amenable number.

8050506077781 is a deficient number, since it is larger than the sum of its proper divisors (4210591202859).

8050506077781 is a wasteful number, since it uses less digits than its factorization.

8050506077781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23066 (or 23063 counting only the distinct ones).

The product of its (nonzero) digits is 3292800, while the sum is 54.

The spelling of 8050506077781 in words is "eight trillion, fifty billion, five hundred six million, seventy-seven thousand, seven hundred eighty-one".