7985579514 has 64 divisors (see below), whose sum is σ = 17646999552. Its totient is φ = 2388902400.

The previous prime is 7985579513. The next prime is 7985579527. The reversal of 7985579514 is 4159755897.

It is not an unprimeable number, because it can be changed into a prime (7985579513) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2988399 + ... + 2991069.

It is an arithmetic number, because the mean of its divisors is an integer number (275734368).

Almost surely, 2^7985579514 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7985579514, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8823499776).

7985579514 is an abundant number, since it is smaller than the sum of its proper divisors (9661420038).

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

7985579514 is a wasteful number, since it uses less digits than its factorization.

7985579514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3251.

The product of its digits is 15876000, while the sum is 60.

The square root of 7985579514 is about 89362.0697723592. The cubic root of 7985579514 is about 1998.7975700593.

The spelling of 7985579514 in words is "seven billion, nine hundred eighty-five million, five hundred seventy-nine thousand, five hundred fourteen".