102109551378 has 16 divisors (see below), whose sum is σ = 204251868480. Its totient is φ = 34031056176.

The previous prime is 102109551361. The next prime is 102109551413. The reversal of 102109551378 is 873155901201.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1324633 + ... + 1399596.

It is an arithmetic number, because the mean of its divisors is an integer number (12765741780).

Almost surely, 2^102109551378 is an apocalyptic number.

102109551378 is an abundant number, since it is smaller than the sum of its proper divisors (102142317102).

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

102109551378 is a wasteful number, since it uses less digits than its factorization.

102109551378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2730481.

The product of its (nonzero) digits is 75600, while the sum is 42.

The spelling of 102109551378 in words is "one hundred two billion, one hundred nine million, five hundred fifty-one thousand, three hundred seventy-eight".