77200129008 has 30 divisors (see below), whose sum is σ = 216053139224. Its totient is φ = 25733376288.

The previous prime is 77200128989. The next prime is 77200129087. The reversal of 77200129008 is 80092100277.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 268055860 + ... + 268056147.

Almost surely, 2^77200129008 is an apocalyptic number.

It is an amenable number.

77200129008 is an abundant number, since it is smaller than the sum of its proper divisors (138853010216).

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

77200129008 is a wasteful number, since it uses less digits than its factorization.

77200129008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536112021 (or 536112012 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The spelling of 77200129008 in words is "seventy-seven billion, two hundred million, one hundred twenty-nine thousand, eight".