77755280052 has 24 divisors (see below), whose sum is σ = 181434556800. Its totient is φ = 25917630976.

The previous prime is 77755280023. The next prime is 77755280063. The reversal of 77755280052 is 25008255777.

It is a junction number, because it is equal to n+sod(n) for n = 77755279983 and 77755280010.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 413524 + ... + 571412.

It is an arithmetic number, because the mean of its divisors is an integer number (7559773200).

Almost surely, 2^77755280052 is an apocalyptic number.

It is an amenable number.

77755280052 is an abundant number, since it is smaller than the sum of its proper divisors (103679276748).

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

77755280052 is a wasteful number, since it uses less digits than its factorization.

77755280052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198935 (or 198933 counting only the distinct ones).

The product of its (nonzero) digits is 1372000, while the sum is 48.

The spelling of 77755280052 in words is "seventy-seven billion, seven hundred fifty-five million, two hundred eighty thousand, fifty-two".