77825305507800 has 48 divisors (see below), whose sum is σ = 241258447076040. Its totient is φ = 20753414801920.

The previous prime is 77825305507769. The next prime is 77825305507847. The reversal of 77825305507800 is 870550352877.

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 11 ways as a sum of consecutive naturals, for example, 64854420657 + ... + 64854421856.

Almost surely, 2^{77825305507800} is an apocalyptic number.

It is an amenable number.

77825305507800 is an abundant number, since it is smaller than the sum of its proper divisors (163433141568240).

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

77825305507800 is a wasteful number, since it uses less digits than its factorization.

77825305507800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129708842532 (or 129708842523 counting only the distinct ones).

The product of its (nonzero) digits is 16464000, while the sum is 57.

The spelling of 77825305507800 in words is "seventy-seven trillion, eight hundred twenty-five billion, three hundred five million, five hundred seven thousand, eight hundred".