77334124513 has 4 divisors (see below), whose sum is σ = 78601897108. Its totient is φ = 76066351920.

The previous prime is 77334124481. The next prime is 77334124541. The reversal of 77334124513 is 31542143377.

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 2 ways, for example, as 22997115904 + 54337008609 = 151648^2 + 233103^2 .

It is a cyclic number.

It is not a de Polignac number, because 77334124513 - 2⁵ = 77334124481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77334124013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 633886206 + ... + 633886327.

It is an arithmetic number, because the mean of its divisors is an integer number (19650474277).

Almost surely, 2^77334124513 is an apocalyptic number.

It is an amenable number.

77334124513 is a deficient number, since it is larger than the sum of its proper divisors (1267772595).

77334124513 is a wasteful number, since it uses less digits than its factorization.

77334124513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1267772594.

The product of its digits is 211680, while the sum is 40.

The spelling of 77334124513 in words is "seventy-seven billion, three hundred thirty-four million, one hundred twenty-four thousand, five hundred thirteen".