77677347500 has 60 divisors (see below), whose sum is σ = 170235819600. Its totient is φ = 31003080000.

The previous prime is 77677347431. The next prime is 77677347511. The reversal of 77677347500 is 574377677.

It is a happy number.

It is an unprimeable number.

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 19 ways as a sum of consecutive naturals, for example, 1118801 + ... + 1186199.

It is an arithmetic number, because the mean of its divisors is an integer number (2837263660).

Almost surely, 2^77677347500 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 77677347500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85117909800).

77677347500 is an abundant number, since it is smaller than the sum of its proper divisors (92558472100).

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

77677347500 is a wasteful number, since it uses less digits than its factorization.

77677347500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67884 (or 67867 counting only the distinct ones).

The product of its (nonzero) digits is 6050520, while the sum is 53.

The spelling of 77677347500 in words is "seventy-seven billion, six hundred seventy-seven million, three hundred forty-seven thousand, five hundred".