87317376578 has 8 divisors (see below), whose sum is σ = 130981599372. Its totient is φ = 43656843456.

The previous prime is 87317376533. The next prime is 87317376637. The reversal of 87317376578 is 87567371378.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 83247829729 + 4069546849 = 288527^2 + 63793^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 87317376578.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 862475 + ... + 958382.

Almost surely, 2^87317376578 is an apocalyptic number.

87317376578 is a deficient number, since it is larger than the sum of its proper divisors (43664222794).

87317376578 is a wasteful number, since it uses less digits than its factorization.

87317376578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1844836.

The product of its digits is 41489280, while the sum is 62.

The spelling of 87317376578 in words is "eighty-seven billion, three hundred seventeen million, three hundred seventy-six thousand, five hundred seventy-eight".