87803171856 has 75 divisors (see below), whose sum is σ = 254158731343. Its totient is φ = 29264168160.

The previous prime is 87803171851. The next prime is 87803171879. The reversal of 87803171856 is 65817130878.

It is a happy number.

The square root of 87803171856 is 296316.

It is a perfect power (a square), and thus also a powerful number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87803171851) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 10663261 + ... + 10671491.

Almost surely, 2^87803171856 is an apocalyptic number.

87803171856 is the 296316-th square number.

It is an amenable number.

87803171856 is an abundant number, since it is smaller than the sum of its proper divisors (166355559487).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87803171856 is an frugal number, since it uses more digits than its factorization.

87803171856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16482 (or 8236 counting only the distinct ones).

The product of its (nonzero) digits is 2257920, while the sum is 54.

The spelling of 87803171856 in words is "eighty-seven billion, eight hundred three million, one hundred seventy-one thousand, eight hundred fifty-six".