77819903046 has 24 divisors (see below), whose sum is σ = 172197234144. Its totient is φ = 25388053200.

The previous prime is 77819902987. The next prime is 77819903059. The reversal of 77819903046 is 64030991877.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 77819902983 and 77819903001.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45992005 + ... + 45993696.

It is an arithmetic number, because the mean of its divisors is an integer number (7174884756).

Almost surely, 2^77819903046 is an apocalyptic number.

77819903046 is an abundant number, since it is smaller than the sum of its proper divisors (94377331098).

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

77819903046 is a wasteful number, since it uses less digits than its factorization.

77819903046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91985756 (or 91985753 counting only the distinct ones).

The product of its (nonzero) digits is 2286144, while the sum is 54.

The spelling of 77819903046 in words is "seventy-seven billion, eight hundred nineteen million, nine hundred three thousand, forty-six".