77343743444 has 48 divisors (see below), whose sum is σ = 156300217920. Its totient is φ = 33154544640.

The previous prime is 77343743413. The next prime is 77343743497. The reversal of 77343743444 is 44434734377.

It is a super-2 number, since 2×77343743444² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (50) 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 = 77343743392 and 77343743401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 649949 + ... + 759684.

It is an arithmetic number, because the mean of its divisors is an integer number (3256254540).

Almost surely, 2^77343743444 is an apocalyptic number.

It is an amenable number.

77343743444 is an abundant number, since it is smaller than the sum of its proper divisors (78956474476).

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

77343743444 is a wasteful number, since it uses less digits than its factorization.

77343743444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1409720 (or 1409718 counting only the distinct ones).

The product of its digits is 9483264, while the sum is 50.

The spelling of 77343743444 in words is "seventy-seven billion, three hundred forty-three million, seven hundred forty-three thousand, four hundred forty-four".