20103305040 has 240 divisors, whose sum is σ = 83093931648. Its totient is φ = 4241562624.

The previous prime is 20103305039. The next prime is 20103305063. The reversal of 20103305040 is 4050330102.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (18).

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 in 47 ways as a sum of consecutive naturals, for example, 87894 + ... + 218933.

Almost surely, 2^20103305040 is an apocalyptic number.

20103305040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20103305040 is an abundant number, since it is smaller than the sum of its proper divisors (62990626608).

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

20103305040 is a wasteful number, since it uses less digits than its factorization.

20103305040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306866 (or 306857 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

Adding to 20103305040 its reverse (4050330102), we get a palindrome (24153635142).

The spelling of 20103305040 in words is "twenty billion, one hundred three million, three hundred five thousand, forty".