87748684778 has 8 divisors (see below), whose sum is σ = 132569955840. Its totient is φ = 43558699500.

The previous prime is 87748684753. The next prime is 87748684783.

87748684778 is nontrivially palindromic in base 10.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 157821098 + ... + 157821653.

It is an arithmetic number, because the mean of its divisors is an integer number (16571244480).

Almost surely, 2^87748684778 is an apocalyptic number.

87748684778 is a deficient number, since it is larger than the sum of its proper divisors (44821271062).

87748684778 is a wasteful number, since it uses less digits than its factorization.

87748684778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315642892.

The product of its digits is 944111616, while the sum is 74.

The spelling of 87748684778 in words is "eighty-seven billion, seven hundred forty-eight million, six hundred eighty-four thousand, seven hundred seventy-eight".