103511999988 has 18 divisors (see below), whose sum is σ = 261655333394. Its totient is φ = 34503999984.

The previous prime is 103511999953. The next prime is 103512000017. The reversal of 103511999988 is 889999115301.

103511999988 is a `hidden beast` number, since 1 + 0 + 351 + 199 + 9 + 98 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 102341128464 + 1170871524 = 319908^2 + 34218^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1437666631 + ... + 1437666702.

Almost surely, 2^103511999988 is an apocalyptic number.

103511999988 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

103511999988 is an abundant number, since it is smaller than the sum of its proper divisors (158143333406).

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

103511999988 is a wasteful number, since it uses less digits than its factorization.

103511999988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2875333343 (or 2875333338 counting only the distinct ones).

The product of its (nonzero) digits is 6298560, while the sum is 63.

The spelling of 103511999988 in words is "one hundred three billion, five hundred eleven million, nine hundred ninety-nine thousand, nine hundred eighty-eight".