77243757132217 has 8 divisors (see below), whose sum is σ = 84238566688640. Its totient is φ = 70399373587920.

The previous prime is 77243757132203. The next prime is 77243757132259. The reversal of 77243757132217 is 71223175734277.

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

It is a de Polignac number, because none of the positive numbers 2^k-77243757132217 is a prime.

It is not an unprimeable number, because it can be changed into a prime (77243757132287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37606501959 + ... + 37606504012.

It is an arithmetic number, because the mean of its divisors is an integer number (10529820836080).

Almost surely, 2^{77243757132217} is an apocalyptic number.

It is an amenable number.

77243757132217 is a deficient number, since it is larger than the sum of its proper divisors (6994809556423).

77243757132217 is a wasteful number, since it uses less digits than its factorization.

77243757132217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75213006063.

The product of its digits is 24202080, while the sum is 58.

The spelling of 77243757132217 in words is "seventy-seven trillion, two hundred forty-three billion, seven hundred fifty-seven million, one hundred thirty-two thousand, two hundred seventeen".