77888479044 has 24 divisors (see below), whose sum is σ = 182691307008. Its totient is φ = 25826894560.

The previous prime is 77888479037. The next prime is 77888479051. The reversal of 77888479044 is 44097488877.

It is an interprime number because it is at equal distance from previous prime (77888479037) and next prime (77888479051).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16989087 + ... + 16993670.

It is an arithmetic number, because the mean of its divisors is an integer number (7612137792).

Almost surely, 2^77888479044 is an apocalyptic number.

It is an amenable number.

77888479044 is an abundant number, since it is smaller than the sum of its proper divisors (104802827964).

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

77888479044 is a wasteful number, since it uses less digits than its factorization.

77888479044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33982955 (or 33982953 counting only the distinct ones).

The product of its (nonzero) digits is 101154816, while the sum is 66.

The spelling of 77888479044 in words is "seventy-seven billion, eight hundred eighty-eight million, four hundred seventy-nine thousand, forty-four".