87121839043 has 8 divisors (see below), whose sum is σ = 88124220800. Its totient is φ = 86123150208.

The previous prime is 87121839029. The next prime is 87121839059. The reversal of 87121839043 is 34093812178.

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 87121839043 - 2⁵ = 87121839011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 87121838984 and 87121839002.

It is not an unprimeable number, because it can be changed into a prime (87121839073) 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, 875763 + ... + 970156.

It is an arithmetic number, because the mean of its divisors is an integer number (11015527600).

Almost surely, 2^87121839043 is an apocalyptic number.

87121839043 is a deficient number, since it is larger than the sum of its proper divisors (1002381757).

87121839043 is a wasteful number, since it uses less digits than its factorization.

87121839043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1846461.

The product of its (nonzero) digits is 290304, while the sum is 46.

The spelling of 87121839043 in words is "eighty-seven billion, one hundred twenty-one million, eight hundred thirty-nine thousand, forty-three".