86217537121 has 8 divisors (see below), whose sum is σ = 86633141504. Its totient is φ = 85802191920.

The previous prime is 86217537079. The next prime is 86217537137. The reversal of 86217537121 is 12173571268.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86217537121 is a prime.

It is a super-2 number, since 2×86217537121² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86217537421) 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, 619450 + ... + 745756.

It is an arithmetic number, because the mean of its divisors is an integer number (10829142688).

Almost surely, 2^86217537121 is an apocalyptic number.

It is an amenable number.

86217537121 is a deficient number, since it is larger than the sum of its proper divisors (415604383).

86217537121 is a wasteful number, since it uses less digits than its factorization.

86217537121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129591.

The product of its digits is 141120, while the sum is 43.

The spelling of 86217537121 in words is "eighty-six billion, two hundred seventeen million, five hundred thirty-seven thousand, one hundred twenty-one".