87727272778 has 32 divisors (see below), whose sum is σ = 135218559168. Its totient is φ = 42676108800.

The previous prime is 87727272767. The next prime is 87727272869.

87727272778 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2703168 + ... + 2735428.

It is an arithmetic number, because the mean of its divisors is an integer number (4225579974).

Almost surely, 2^87727272778 is an apocalyptic number.

87727272778 is a deficient number, since it is larger than the sum of its proper divisors (47491286390).

87727272778 is a wasteful number, since it uses less digits than its factorization.

87727272778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32598.

The product of its digits is 60236288, while the sum is 64.

The spelling of 87727272778 in words is "eighty-seven billion, seven hundred twenty-seven million, two hundred seventy-two thousand, seven hundred seventy-eight".