7755665755712 has 112 divisors (see below), whose sum is σ = 18375682913280. Its totient is φ = 3175493325312.

The previous prime is 7755665755711. The next prime is 7755665755729. The reversal of 7755665755712 is 2175575665577.

It is a tau number, because it is divible by the number of its divisors (112).

It is not an unprimeable number, because it can be changed into a prime (7755665755711) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8066339 + ... + 8976477.

It is an arithmetic number, because the mean of its divisors is an integer number (164068597440).

Almost surely, 2^{7755665755712} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7755665755712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9187841456640).

7755665755712 is an abundant number, since it is smaller than the sum of its proper divisors (10620017157568).

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

7755665755712 is a wasteful number, since it uses less digits than its factorization.

7755665755712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 911008 (or 910998 counting only the distinct ones).

The product of its digits is 540225000, while the sum is 68.

The spelling of 7755665755712 in words is "seven trillion, seven hundred fifty-five billion, six hundred sixty-five million, seven hundred fifty-five thousand, seven hundred twelve".