10101999988 has 6 divisors (see below), whose sum is σ = 17678499986. Its totient is φ = 5050999992.

The previous prime is 10101999967. The next prime is 10102000021. The reversal of 10101999988 is 88999910101.

It can be written as a sum of positive squares in only one way, i.e., 7793005284 + 2308994704 = 88278^2 + 48052^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1262749995 + ... + 1262750002.

Almost surely, 2^10101999988 is an apocalyptic number.

It is an amenable number.

10101999988 is a deficient number, since it is larger than the sum of its proper divisors (7576499998).

10101999988 is a wasteful number, since it uses less digits than its factorization.

10101999988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2525500001 (or 2525499999 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 55.

The spelling of 10101999988 in words is "ten billion, one hundred one million, nine hundred ninety-nine thousand, nine hundred eighty-eight".