77824260894 has 16 divisors (see below), whose sum is σ = 155734966800. Its totient is φ = 25927012800.

The previous prime is 77824260881. The next prime is 77824260929. The reversal of 77824260894 is 49806242877.

It is a happy number.

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 7 ways as a sum of consecutive naturals, for example, 3590169 + ... + 3611780.

It is an arithmetic number, because the mean of its divisors is an integer number (9733435425).

Almost surely, 2^77824260894 is an apocalyptic number.

77824260894 is an abundant number, since it is smaller than the sum of its proper divisors (77910705906).

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

77824260894 is a wasteful number, since it uses less digits than its factorization.

77824260894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7203755.

The product of its (nonzero) digits is 10838016, while the sum is 57.

The spelling of 77824260894 in words is "seventy-seven billion, eight hundred twenty-four million, two hundred sixty thousand, eight hundred ninety-four".