77450442744429 has 12 divisors (see below), whose sum is σ = 111876044654556. Its totient is φ = 51632159459712.

The previous prime is 77450442744413. The next prime is 77450442744481. The reversal of 77450442744429 is 92444724405477.

77450442744429 is a `hidden beast` number, since 7 + 7 + 4 + 504 + 42 + 7 + 44 + 42 + 9 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 24685763699529 + 52764679044900 = 4968477^2 + 7263930^2 .

It is not a de Polignac number, because 77450442744429 - 2⁴ = 77450442744413 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77450442794429) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 122085762 + ... + 122718515.

It is an arithmetic number, because the mean of its divisors is an integer number (9323003721213).

Almost surely, 2^{77450442744429} is an apocalyptic number.

It is an amenable number.

77450442744429 is a deficient number, since it is larger than the sum of its proper divisors (34425601910127).

77450442744429 is a wasteful number, since it uses less digits than its factorization.

77450442744429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244839436 (or 244839433 counting only the distinct ones).

The product of its (nonzero) digits is 252887040, while the sum is 63.

The spelling of 77450442744429 in words is "seventy-seven trillion, four hundred fifty billion, four hundred forty-two million, seven hundred forty-four thousand, four hundred twenty-nine".