7999742107585 has 32 divisors (see below), whose sum is σ = 9658711651968. Its totient is φ = 6360597534720.

The previous prime is 7999742107571. The next prime is 7999742107619. The reversal of 7999742107585 is 5857012479997.

It is not a de Polignac number, because 7999742107585 - 2²¹ = 7999740010433 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 829585774 + ... + 829595416.

It is an arithmetic number, because the mean of its divisors is an integer number (301834739124).

Almost surely, 2^{7999742107585} is an apocalyptic number.

It is an amenable number.

7999742107585 is a deficient number, since it is larger than the sum of its proper divisors (1658969544383).

7999742107585 is a wasteful number, since it uses less digits than its factorization.

7999742107585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11505.

The product of its (nonzero) digits is 400075200, while the sum is 73.

The spelling of 7999742107585 in words is "seven trillion, nine hundred ninety-nine billion, seven hundred forty-two million, one hundred seven thousand, five hundred eighty-five".