102378881090 has 16 divisors (see below), whose sum is σ = 184863322872. Its totient is φ = 40822366464.

The previous prime is 102378881083. The next prime is 102378881117. The reversal of 102378881090 is 90188873201.

It is a Cunningham number, because it is equal to 319967²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 36856704361 + 65522176729 = 191981^2 + 255973^2 .

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, 16144919 + ... + 16151258.

Almost surely, 2^102378881090 is an apocalyptic number.

102378881090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102378881090 is a deficient number, since it is larger than the sum of its proper divisors (82484441782).

102378881090 is a wasteful number, since it uses less digits than its factorization.

102378881090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32296501.

The product of its (nonzero) digits is 193536, while the sum is 47.

The spelling of 102378881090 in words is "one hundred two billion, three hundred seventy-eight million, eight hundred eighty-one thousand, ninety".