102817378555 has 8 divisors (see below), whose sum is σ = 123393706992. Its totient is φ = 82245334368.

The previous prime is 102817378529. The next prime is 102817378613. The reversal of 102817378555 is 555873718201.

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

It is a cyclic number.

It is not a de Polignac number, because 102817378555 - 2²¹ = 102815281403 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1018024 + ... + 1114453.

It is an arithmetic number, because the mean of its divisors is an integer number (15424213374).

Almost surely, 2^102817378555 is an apocalyptic number.

102817378555 is a deficient number, since it is larger than the sum of its proper divisors (20576328437).

102817378555 is an equidigital number, since it uses as much as digits as its factorization.

102817378555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2142125.

The product of its (nonzero) digits is 2352000, while the sum is 52.

The spelling of 102817378555 in words is "one hundred two billion, eight hundred seventeen million, three hundred seventy-eight thousand, five hundred fifty-five".