87764046778 has 16 divisors (see below), whose sum is σ = 132422653440. Its totient is φ = 43623885456.

The previous prime is 87764046763. The next prime is 87764046791.

87764046778 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62775 + ... + 423637.

It is an arithmetic number, because the mean of its divisors is an integer number (8276415840).

Almost surely, 2^87764046778 is an apocalyptic number.

87764046778 is a deficient number, since it is larger than the sum of its proper divisors (44658606662).

87764046778 is a wasteful number, since it uses less digits than its factorization.

87764046778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361581.

The product of its (nonzero) digits is 88510464, while the sum is 64.

The spelling of 87764046778 in words is "eighty-seven billion, seven hundred sixty-four million, forty-six thousand, seven hundred seventy-eight".