78776476016 has 120 divisors (see below), whose sum is σ = 180166995360. Its totient is φ = 33266128896.

The previous prime is 78776476013. The next prime is 78776476063. The reversal of 78776476016 is 61067467787.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78776476013) 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 23 ways as a sum of consecutive naturals, for example, 21838085 + ... + 21841691.

It is an arithmetic number, because the mean of its divisors is an integer number (1501391628).

Almost surely, 2^78776476016 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78776476016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90083497680).

78776476016 is an abundant number, since it is smaller than the sum of its proper divisors (101390519344).

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

78776476016 is a wasteful number, since it uses less digits than its factorization.

78776476016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4031 (or 4018 counting only the distinct ones).

The product of its (nonzero) digits is 16595712, while the sum is 59.

The spelling of 78776476016 in words is "seventy-eight billion, seven hundred seventy-six million, four hundred seventy-six thousand, sixteen".