87217532436572 has 12 divisors (see below), whose sum is σ = 152632847201016. Its totient is φ = 43608147522000.

The previous prime is 87217532436569. The next prime is 87217532436611. The reversal of 87217532436572 is 27563423571278.

It is a super-2 number, since 2×87217532436572² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 154356818 + ... + 154920825.

It is an arithmetic number, because the mean of its divisors is an integer number (12719403933418).

Almost surely, 2^{87217532436572} is an apocalyptic number.

It is an amenable number.

87217532436572 is a deficient number, since it is larger than the sum of its proper divisors (65415314764444).

87217532436572 is a wasteful number, since it uses less digits than its factorization.

87217532436572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309348148 (or 309348146 counting only the distinct ones).

The product of its digits is 118540800, while the sum is 62.

The spelling of 87217532436572 in words is "eighty-seven trillion, two hundred seventeen billion, five hundred thirty-two million, four hundred thirty-six thousand, five hundred seventy-two".