77075144404 has 6 divisors (see below), whose sum is σ = 134881502714. Its totient is φ = 38537572200.

The previous prime is 77075144401. The next prime is 77075144413. The reversal of 77075144404 is 40444157077.

It can be written as a sum of positive squares in only one way, i.e., 76451144004 + 624000400 = 276498^2 + 24980^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77075144401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9634393047 + ... + 9634393054.

Almost surely, 2^77075144404 is an apocalyptic number.

It is an amenable number.

77075144404 is a deficient number, since it is larger than the sum of its proper divisors (57806358310).

77075144404 is a wasteful number, since it uses less digits than its factorization.

77075144404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19268786105 (or 19268786103 counting only the distinct ones).

The product of its (nonzero) digits is 439040, while the sum is 43.

The spelling of 77075144404 in words is "seventy-seven billion, seventy-five million, one hundred forty-four thousand, four hundred four".