7987773995 has 8 divisors (see below), whose sum is σ = 9607468416. Its totient is φ = 6375459456.

The previous prime is 7987773973. The next prime is 7987774009. The reversal of 7987773995 is 5993777897.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7987773995 - 2⁶ = 7987773931 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 (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1842587 + ... + 1846916.

It is an arithmetic number, because the mean of its divisors is an integer number (1200933552).

Almost surely, 2^7987773995 is an apocalyptic number.

7987773995 is a deficient number, since it is larger than the sum of its proper divisors (1619694421).

7987773995 is a wasteful number, since it uses less digits than its factorization.

7987773995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3689941.

The product of its digits is 210039480, while the sum is 71.

The square root of 7987773995 is about 89374.3475220938. The cubic root of 7987773995 is about 1998.9806467978.

The spelling of 7987773995 in words is "seven billion, nine hundred eighty-seven million, seven hundred seventy-three thousand, nine hundred ninety-five".