77703677044 has 48 divisors (see below), whose sum is σ = 164823361920. Its totient is φ = 31290393600.

The previous prime is 77703677041. The next prime is 77703677081. The reversal of 77703677044 is 44077630777.

It is a super-2 number, since 2×77703677044² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (52) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 77703676982 and 77703677000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77703677041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 150267 + ... + 421885.

It is an arithmetic number, because the mean of its divisors is an integer number (3433820040).

Almost surely, 2^77703677044 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 77703677044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82411680960).

77703677044 is an abundant number, since it is smaller than the sum of its proper divisors (87119684876).

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

77703677044 is a wasteful number, since it uses less digits than its factorization.

77703677044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272248 (or 272246 counting only the distinct ones).

The product of its (nonzero) digits is 4840416, while the sum is 52.

The spelling of 77703677044 in words is "seventy-seven billion, seven hundred three million, six hundred seventy-seven thousand, forty-four".