87687521243 has 16 divisors (see below), whose sum is σ = 105562590720. Its totient is φ = 71155060416.

The previous prime is 87687521231. The next prime is 87687521261. The reversal of 87687521243 is 34212578678.

It is a cyclic number.

It is not a de Polignac number, because 87687521243 - 2¹² = 87687517147 is a prime.

It is a super-3 number, since 3×87687521243³ (a number of 34 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87687521203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39455 + ... + 420632.

It is an arithmetic number, because the mean of its divisors is an integer number (6597661920).

Almost surely, 2^87687521243 is an apocalyptic number.

87687521243 is a deficient number, since it is larger than the sum of its proper divisors (17875069477).

87687521243 is a wasteful number, since it uses less digits than its factorization.

87687521243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 461546.

The product of its digits is 4515840, while the sum is 53.

The spelling of 87687521243 in words is "eighty-seven billion, six hundred eighty-seven million, five hundred twenty-one thousand, two hundred forty-three".