7705681512 has 32 divisors (see below), whose sum is σ = 19310205600. Its totient is φ = 2562426944.

The previous prime is 7705681481. The next prime is 7705681517. The reversal of 7705681512 is 2151865077.

It is a super-2 number, since 2×7705681512² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7705681517) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 373083 + ... + 393194.

It is an arithmetic number, because the mean of its divisors is an integer number (603443925).

Almost surely, 2^7705681512 is an apocalyptic number.

It is an amenable number.

7705681512 is an abundant number, since it is smaller than the sum of its proper divisors (11604524088).

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

7705681512 is a wasteful number, since it uses less digits than its factorization.

7705681512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 766705 (or 766701 counting only the distinct ones).

The product of its (nonzero) digits is 117600, while the sum is 42.

The square root of 7705681512 is about 87782.0113235052. The cubic root of 7705681512 is about 1975.1663812829.

The spelling of 7705681512 in words is "seven billion, seven hundred five million, six hundred eighty-one thousand, five hundred twelve".