77678850004 has 48 divisors (see below), whose sum is σ = 155740838400. Its totient is φ = 33208955136.

The previous prime is 77678850001. The next prime is 77678850037. The reversal of 77678850004 is 40005887677.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77678850001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24983602 + ... + 24986710.

It is an arithmetic number, because the mean of its divisors is an integer number (3244600800).

Almost surely, 2^77678850004 is an apocalyptic number.

It is an amenable number.

77678850004 is an abundant number, since it is smaller than the sum of its proper divisors (78061988396).

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

77678850004 is a wasteful number, since it uses less digits than its factorization.

77678850004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5032 (or 5030 counting only the distinct ones).

The product of its (nonzero) digits is 2634240, while the sum is 52.

The spelling of 77678850004 in words is "seventy-seven billion, six hundred seventy-eight million, eight hundred fifty thousand, four".