87488747021 has 8 divisors (see below), whose sum is σ = 95815577760. Its totient is φ = 79390048752.

The previous prime is 87488746999. The next prime is 87488747023. The reversal of 87488747021 is 12074788478.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87488747021 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 (87488747023) 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, 57032315 + ... + 57033848.

It is an arithmetic number, because the mean of its divisors is an integer number (11976947220).

Almost surely, 2^87488747021 is an apocalyptic number.

It is an amenable number.

87488747021 is a deficient number, since it is larger than the sum of its proper divisors (8326830739).

87488747021 is a wasteful number, since it uses less digits than its factorization.

87488747021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114066235.

The product of its (nonzero) digits is 5619712, while the sum is 56.

The spelling of 87488747021 in words is "eighty-seven billion, four hundred eighty-eight million, seven hundred forty-seven thousand, twenty-one".