87763436778 has 8 divisors (see below), whose sum is σ = 175526873568. Its totient is φ = 29254478924.

The previous prime is 87763436773. The next prime is 87763436791.

87763436778 is nontrivially palindromic in base 10.

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

87763436778 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (87763436771) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7313619726 + ... + 7313619737.

It is an arithmetic number, because the mean of its divisors is an integer number (21940859196).

Almost surely, 2^87763436778 is an apocalyptic number.

87763436778 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87763436778 is a wasteful number, since it uses less digits than its factorization.

87763436778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14627239468.

The product of its digits is 199148544, while the sum is 66.

The spelling of 87763436778 in words is "eighty-seven billion, seven hundred sixty-three million, four hundred thirty-six thousand, seven hundred seventy-eight".