77438457034 has 4 divisors (see below), whose sum is σ = 116157685554. Its totient is φ = 38719228516.

The previous prime is 77438456993. The next prime is 77438457037. The reversal of 77438457034 is 43075483477.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 77282332009 + 156125025 = 277997^2 + 12495^2 .

It is not an unprimeable number, because it can be changed into a prime (77438457037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19359614257 + ... + 19359614260.

Almost surely, 2^77438457034 is an apocalyptic number.

77438457034 is a deficient number, since it is larger than the sum of its proper divisors (38719228520).

77438457034 is a wasteful number, since it uses less digits than its factorization.

77438457034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38719228519.

The product of its (nonzero) digits is 7902720, while the sum is 52.

The spelling of 77438457034 in words is "seventy-seven billion, four hundred thirty-eight million, four hundred fifty-seven thousand, thirty-four".