77648709239 has 8 divisors (see below), whose sum is σ = 77783432448. Its totient is φ = 77514103800.

The previous prime is 77648709233. The next prime is 77648709241. The reversal of 77648709239 is 93290784677.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 77648709239 - 2¹² = 77648705143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77648709233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1345394 + ... + 1401920.

It is an arithmetic number, because the mean of its divisors is an integer number (9722929056).

Almost surely, 2^77648709239 is an apocalyptic number.

77648709239 is a deficient number, since it is larger than the sum of its proper divisors (134723209).

77648709239 is a wasteful number, since it uses less digits than its factorization.

77648709239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58885.

The product of its (nonzero) digits is 32006016, while the sum is 62.

The spelling of 77648709239 in words is "seventy-seven billion, six hundred forty-eight million, seven hundred nine thousand, two hundred thirty-nine".