87774566547778 has 64 divisors (see below), whose sum is σ = 145594974801024. Its totient is φ = 39353607936000.

The previous prime is 87774566547739. The next prime is 87774566547779.

87774566547778 is nontrivially palindromic in base 10.

It is not an unprimeable number, because it can be changed into a prime (87774566547779) 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, 2978120050 + ... + 2978149522.

It is an arithmetic number, because the mean of its divisors is an integer number (2274921481266).

Almost surely, 2^{87774566547778} is an apocalyptic number.

87774566547778 is a deficient number, since it is larger than the sum of its proper divisors (57820408253246).

87774566547778 is a wasteful number, since it uses less digits than its factorization.

87774566547778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32131.

The product of its digits is 108425318400, while the sum is 88.

The spelling of 87774566547778 in words is "eighty-seven trillion, seven hundred seventy-four billion, five hundred sixty-six million, five hundred forty-seven thousand, seven hundred seventy-eight".