77525575752 has 16 divisors (see below), whose sum is σ = 193813939440. Its totient is φ = 25841858576.

The previous prime is 77525575739. The next prime is 77525575763. The reversal of 77525575752 is 25757552577.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 77525575692 and 77525575701.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1615116138 + ... + 1615116185.

It is an arithmetic number, because the mean of its divisors is an integer number (12113371215).

Almost surely, 2^77525575752 is an apocalyptic number.

It is an amenable number.

77525575752 is an abundant number, since it is smaller than the sum of its proper divisors (116288363688).

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

77525575752 is a wasteful number, since it uses less digits than its factorization.

77525575752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3230232332 (or 3230232328 counting only the distinct ones).

The product of its digits is 30012500, while the sum is 57.

The spelling of 77525575752 in words is "seventy-seven billion, five hundred twenty-five million, five hundred seventy-five thousand, seven hundred fifty-two".