7961704585065 has 256 divisors, whose sum is σ = 18032914759680. Its totient is φ = 3236433408000.

The previous prime is 7961704585061. The next prime is 7961704585097. The reversal of 7961704585065 is 5605854071697.

7961704585065 is a `hidden beast` number, since 7 + 9 + 6 + 1 + 70 + 4 + 58 + 506 + 5 = 666.

It is not a de Polignac number, because 7961704585065 - 2² = 7961704585061 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a junction number, because it is equal to n+sod(n) for n = 7961704584993 and 7961704585011.

It is not an unprimeable number, because it can be changed into a prime (7961704585061) by changing a digit.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 1055785195 + ... + 1055792735.

It is an arithmetic number, because the mean of its divisors is an integer number (70441073280).

Almost surely, 2^{7961704585065} is an apocalyptic number.

It is an amenable number.

7961704585065 is an abundant number, since it is smaller than the sum of its proper divisors (10071210174615).

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

7961704585065 is a wasteful number, since it uses less digits than its factorization.

7961704585065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9781 (or 9775 counting only the distinct ones).

The product of its (nonzero) digits is 63504000, while the sum is 63.

The spelling of 7961704585065 in words is "seven trillion, nine hundred sixty-one billion, seven hundred four million, five hundred eighty-five thousand, sixty-five".