87517071578 has 32 divisors (see below), whose sum is σ = 146351318400. Its totient is φ = 39006779904.

The previous prime is 87517071539. The next prime is 87517071667.

It is a happy number.

87517071578 is nontrivially palindromic in base 10.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2832851 + ... + 2863577.

It is an arithmetic number, because the mean of its divisors is an integer number (4573478700).

Almost surely, 2^87517071578 is an apocalyptic number.

87517071578 is a deficient number, since it is larger than the sum of its proper divisors (58834246822).

87517071578 is a wasteful number, since it uses less digits than its factorization.

87517071578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35174.

The product of its (nonzero) digits is 3841600, while the sum is 56.

The spelling of 87517071578 in words is "eighty-seven billion, five hundred seventeen million, seventy-one thousand, five hundred seventy-eight".