108638532130 has 16 divisors (see below), whose sum is σ = 207052261560. Its totient is φ = 40899212032.

The previous prime is 108638532103. The next prime is 108638532133. The reversal of 108638532130 is 31235836801.

It can be written as a sum of positive squares in 4 ways, for example, as 93887700921 + 14750831209 = 306411^2 + 121453^2 .

It is a super-2 number, since 2×108638532130² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (108638532133) by changing a digit.

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, 319524925 + ... + 319525264.

Almost surely, 2^108638532130 is an apocalyptic number.

108638532130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

108638532130 is a deficient number, since it is larger than the sum of its proper divisors (98413729430).

108638532130 is a wasteful number, since it uses less digits than its factorization.

108638532130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639050213.

The product of its (nonzero) digits is 103680, while the sum is 40.

The spelling of 108638532130 in words is "one hundred eight billion, six hundred thirty-eight million, five hundred thirty-two thousand, one hundred thirty".