77907482917 has 16 divisors (see below), whose sum is σ = 85886464320. Its totient is φ = 70078816000.

The previous prime is 77907482881. The next prime is 77907482923. The reversal of 77907482917 is 71928470977.

It is a cyclic number.

It is not a de Polignac number, because 77907482917 - 2²⁷ = 77773265189 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 (77907482017) 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 15 ways as a sum of consecutive naturals, for example, 1777053 + ... + 1820365.

It is an arithmetic number, because the mean of its divisors is an integer number (5367904020).

Almost surely, 2^77907482917 is an apocalyptic number.

It is an amenable number.

77907482917 is a deficient number, since it is larger than the sum of its proper divisors (7978981403).

77907482917 is a wasteful number, since it uses less digits than its factorization.

77907482917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45044.

The product of its (nonzero) digits is 12446784, while the sum is 61.

The spelling of 77907482917 in words is "seventy-seven billion, nine hundred seven million, four hundred eighty-two thousand, nine hundred seventeen".