77871465439 has 8 divisors (see below), whose sum is σ = 82176445040. Its totient is φ = 73587134016.

The previous prime is 77871465433. The next prime is 77871465443. The reversal of 77871465439 is 93456417877.

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 77871465439 - 2⁷ = 77871465311 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 (77871465433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5154294 + ... + 5169379.

It is an arithmetic number, because the mean of its divisors is an integer number (10272055630).

Almost surely, 2^77871465439 is an apocalyptic number.

77871465439 is a deficient number, since it is larger than the sum of its proper divisors (4304979601).

77871465439 is a wasteful number, since it uses less digits than its factorization.

77871465439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10324089.

The product of its digits is 35562240, while the sum is 61.

The spelling of 77871465439 in words is "seventy-seven billion, eight hundred seventy-one million, four hundred sixty-five thousand, four hundred thirty-nine".