87796869778 has 16 divisors (see below), whose sum is σ = 133552748160. Its totient is φ = 43280874000.

The previous prime is 87796869749. The next prime is 87796869779.

It is a happy number.

87796869778 is nontrivially palindromic in base 10.

It is not an unprimeable number, because it can be changed into a prime (87796869779) by changing a digit.

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, 285588 + ... + 507103.

It is an arithmetic number, because the mean of its divisors is an integer number (8347046760).

Almost surely, 2^87796869778 is an apocalyptic number.

87796869778 is a deficient number, since it is larger than the sum of its proper divisors (45755878382).

87796869778 is a wasteful number, since it uses less digits than its factorization.

87796869778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 793473.

The product of its digits is 3584673792, while the sum is 82.

The spelling of 87796869778 in words is "eighty-seven billion, seven hundred ninety-six million, eight hundred sixty-nine thousand, seven hundred seventy-eight".