87238481291 has 8 divisors (see below), whose sum is σ = 93953052480. Its totient is φ = 80524469952.

The previous prime is 87238481279. The next prime is 87238481299. The reversal of 87238481291 is 19218483278.

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 87238481291 - 2¹⁰ = 87238480267 is a prime.

It is a super-2 number, since 2×87238481291² (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 (87238481299) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 217511 + ... + 470943.

It is an arithmetic number, because the mean of its divisors is an integer number (11744131560).

Almost surely, 2^87238481291 is an apocalyptic number.

87238481291 is a deficient number, since it is larger than the sum of its proper divisors (6714571189).

87238481291 is a wasteful number, since it uses less digits than its factorization.

87238481291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279925.

The product of its digits is 1548288, while the sum is 53.

The spelling of 87238481291 in words is "eighty-seven billion, two hundred thirty-eight million, four hundred eighty-one thousand, two hundred ninety-one".