87717220473 has 8 divisors (see below), whose sum is σ = 116972867200. Its totient is φ = 58469860368.

The previous prime is 87717220463. The next prime is 87717220519. The reversal of 87717220473 is 37402271778.

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

It is not a de Polignac number, because 87717220473 - 2⁴ = 87717220457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87717220463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2046913 + ... + 2089326.

It is an arithmetic number, because the mean of its divisors is an integer number (14621608400).

Almost surely, 2^87717220473 is an apocalyptic number.

It is an amenable number.

87717220473 is a deficient number, since it is larger than the sum of its proper divisors (29255646727).

87717220473 is a wasteful number, since it uses less digits than its factorization.

87717220473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4143311.

The product of its (nonzero) digits is 921984, while the sum is 48.

The spelling of 87717220473 in words is "eighty-seven billion, seven hundred seventeen million, two hundred twenty thousand, four hundred seventy-three".