87122255317 has 8 divisors (see below), whose sum is σ = 87998339520. Its totient is φ = 86246752800.

The previous prime is 87122255309. The next prime is 87122255371. The reversal of 87122255317 is 71355222178.

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 87122255317 - 2³ = 87122255309 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 (87122255617) 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, 158817 + ... + 446617.

It is an arithmetic number, because the mean of its divisors is an integer number (10999792440).

Almost surely, 2^87122255317 is an apocalyptic number.

It is an amenable number.

87122255317 is a deficient number, since it is larger than the sum of its proper divisors (876084203).

87122255317 is a wasteful number, since it uses less digits than its factorization.

87122255317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290843.

The product of its digits is 235200, while the sum is 43.

The spelling of 87122255317 in words is "eighty-seven billion, one hundred twenty-two million, two hundred fifty-five thousand, three hundred seventeen".