87705144917 has 8 divisors (see below), whose sum is σ = 94494521856. Its totient is φ = 80921886192.

The previous prime is 87705144797. The next prime is 87705144929. The reversal of 87705144917 is 71944150778.

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 87705144917 - 2¹⁰ = 87705143893 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 (87705144937) 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, 1499753 + ... + 1557134.

It is an arithmetic number, because the mean of its divisors is an integer number (11811815232).

Almost surely, 2^87705144917 is an apocalyptic number.

It is an amenable number.

87705144917 is a deficient number, since it is larger than the sum of its proper divisors (6789376939).

87705144917 is a wasteful number, since it uses less digits than its factorization.

87705144917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3059107.

The product of its (nonzero) digits is 1975680, while the sum is 53.

The spelling of 87705144917 in words is "eighty-seven billion, seven hundred five million, one hundred forty-four thousand, nine hundred seventeen".