2121534988487 has 8 divisors (see below), whose sum is σ = 2130457593600. Its totient is φ = 2112612766264.

The previous prime is 2121534988483. The next prime is 2121534988511. The reversal of 2121534988487 is 7848894351212.

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 2121534988487 - 2² = 2121534988483 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121534988483) 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, 18915668 + ... + 19027494.

It is an arithmetic number, because the mean of its divisors is an integer number (266307199200).

Almost surely, 2^{2121534988487} is an apocalyptic number.

2121534988487 is a deficient number, since it is larger than the sum of its proper divisors (8922605113).

2121534988487 is a wasteful number, since it uses less digits than its factorization.

2121534988487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191445.

The product of its digits is 30965760, while the sum is 62.

The spelling of 2121534988487 in words is "two trillion, one hundred twenty-one billion, five hundred thirty-four million, nine hundred eighty-eight thousand, four hundred eighty-seven".