20103999975 has 18 divisors (see below), whose sum is σ = 36008498136. Its totient is φ = 10722133200.

The previous prime is 20103999973. The next prime is 20103999989. The reversal of 20103999975 is 57999930102.

It is not a de Polignac number, because 20103999975 - 2¹ = 20103999973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20103999973) by changing a digit.

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 17 ways as a sum of consecutive naturals, for example, 44675331 + ... + 44675780.

Almost surely, 2^20103999975 is an apocalyptic number.

20103999975 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20103999975 is a deficient number, since it is larger than the sum of its proper divisors (15904498161).

20103999975 is a wasteful number, since it uses less digits than its factorization.

20103999975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89351127 (or 89351119 counting only the distinct ones).

The product of its (nonzero) digits is 1377810, while the sum is 54.

The spelling of 20103999975 in words is "twenty billion, one hundred three million, nine hundred ninety-nine thousand, nine hundred seventy-five".