7805137056 has 24 divisors (see below), whose sum is σ = 20488485024. Its totient is φ = 2601712320.

The previous prime is 7805137051. The next prime is 7805137073. The reversal of 7805137056 is 6507315087.

It is a tau number, because it is divible by the number of its divisors (24).

It is a junction number, because it is equal to n+sod(n) for n = 7805136999 and 7805137017.

It is not an unprimeable number, because it can be changed into a prime (7805137051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40651660 + ... + 40651851.

It is an arithmetic number, because the mean of its divisors is an integer number (853686876).

Almost surely, 2^7805137056 is an apocalyptic number.

It is an amenable number.

7805137056 is an abundant number, since it is smaller than the sum of its proper divisors (12683347968).

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

7805137056 is a wasteful number, since it uses less digits than its factorization.

7805137056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81303524 (or 81303516 counting only the distinct ones).

The product of its (nonzero) digits is 176400, while the sum is 42.

The square root of 7805137056 is about 88346.6867290449. The cubic root of 7805137056 is about 1983.6277619592.

The spelling of 7805137056 in words is "seven billion, eight hundred five million, one hundred thirty-seven thousand, fifty-six".