87928024121 has 16 divisors (see below), whose sum is σ = 107212533120. Its totient is φ = 70392042240.

The previous prime is 87928024109. The next prime is 87928024127. The reversal of 87928024121 is 12142082978.

It is a cyclic number.

It is not a de Polignac number, because 87928024121 - 2²² = 87923829817 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87928024127) 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 15 ways as a sum of consecutive naturals, for example, 2804606 + ... + 2835783.

It is an arithmetic number, because the mean of its divisors is an integer number (6700783320).

Almost surely, 2^87928024121 is an apocalyptic number.

It is an amenable number.

87928024121 is a deficient number, since it is larger than the sum of its proper divisors (19284508999).

87928024121 is a wasteful number, since it uses less digits than its factorization.

87928024121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5640544.

The product of its (nonzero) digits is 129024, while the sum is 44.

The spelling of 87928024121 in words is "eighty-seven billion, nine hundred twenty-eight million, twenty-four thousand, one hundred twenty-one".