8102551869978 has 32 divisors (see below), whose sum is σ = 17166520123200. Its totient is φ = 2540765948160.

The previous prime is 8102551869943. The next prime is 8102551869989. The reversal of 8102551869978 is 8799681552018.

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, 18708433 + ... + 19136628.

It is an arithmetic number, because the mean of its divisors is an integer number (536453753850).

Almost surely, 2^{8102551869978} is an apocalyptic number.

8102551869978 is an abundant number, since it is smaller than the sum of its proper divisors (9063968253222).

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

8102551869978 is a wasteful number, since it uses less digits than its factorization.

8102551869978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37847182.

The product of its (nonzero) digits is 87091200, while the sum is 69.

The spelling of 8102551869978 in words is "eight trillion, one hundred two billion, five hundred fifty-one million, eight hundred sixty-nine thousand, nine hundred seventy-eight".