87287371573 has 8 divisors (see below), whose sum is σ = 92669709528. Its totient is φ = 81932565504.

The previous prime is 87287371571. The next prime is 87287371601. The reversal of 87287371573 is 37517378278.

It can be written as a sum of positive squares in 4 ways, for example, as 49772717604 + 37514653969 = 223098^2 + 193687^2 .

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 87287371573 - 2¹ = 87287371571 is a prime.

It is a super-2 number, since 2×87287371573² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87287371571) 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, 6876436 + ... + 6889117.

It is an arithmetic number, because the mean of its divisors is an integer number (11583713691).

Almost surely, 2^87287371573 is an apocalyptic number.

It is an amenable number.

87287371573 is a deficient number, since it is larger than the sum of its proper divisors (5382337955).

87287371573 is a wasteful number, since it uses less digits than its factorization.

87287371573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13765943.

The product of its digits is 13829760, while the sum is 58.

The spelling of 87287371573 in words is "eighty-seven billion, two hundred eighty-seven million, three hundred seventy-one thousand, five hundred seventy-three".