7765617012 has 12 divisors (see below), whose sum is σ = 18119773056. Its totient is φ = 2588539000.

The previous prime is 7765617007. The next prime is 7765617047. The reversal of 7765617012 is 2107165677.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 323567364 + ... + 323567387.

It is an arithmetic number, because the mean of its divisors is an integer number (1509981088).

Almost surely, 2^7765617012 is an apocalyptic number.

It is an amenable number.

7765617012 is an abundant number, since it is smaller than the sum of its proper divisors (10354156044).

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

7765617012 is a wasteful number, since it uses less digits than its factorization.

7765617012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 647134758 (or 647134756 counting only the distinct ones).

The product of its (nonzero) digits is 123480, while the sum is 42.

The square root of 7765617012 is about 88122.7383369355. The cubic root of 7765617012 is about 1980.2741697680.

The spelling of 7765617012 in words is "seven billion, seven hundred sixty-five million, six hundred seventeen thousand, twelve".