77850253830 has 16 divisors (see below), whose sum is σ = 186840609264. Its totient is φ = 20760067680.

The previous prime is 77850253823. The next prime is 77850253861. The reversal of 77850253830 is 3835205877.

It is a super-3 number, since 3×77850253830³ (a number of 34 digits) contains 333 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 77850253830.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 1297504201 + ... + 1297504260.

It is an arithmetic number, because the mean of its divisors is an integer number (11677538079).

Almost surely, 2^77850253830 is an apocalyptic number.

77850253830 is an abundant number, since it is smaller than the sum of its proper divisors (108990355434).

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

77850253830 is a wasteful number, since it uses less digits than its factorization.

77850253830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2595008471.

The product of its (nonzero) digits is 1411200, while the sum is 48.

The spelling of 77850253830 in words is "seventy-seven billion, eight hundred fifty million, two hundred fifty-three thousand, eight hundred thirty".