20403075700 has 54 divisors (see below), whose sum is σ = 51503204886. Its totient is φ = 6995338560.

The previous prime is 20403075659. The next prime is 20403075709. The reversal of 20403075700 is 757030402.

It can be written as a sum of positive squares in 3 ways, for example, as 3502035684 + 16901040016 = 59178^2 + 130004^2 .

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20403075709) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2077047 + ... + 2086846.

Almost surely, 2^20403075700 is an apocalyptic number.

20403075700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20403075700 is an abundant number, since it is smaller than the sum of its proper divisors (31100129186).

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

20403075700 is a wasteful number, since it uses less digits than its factorization.

20403075700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4163921 (or 4163907 counting only the distinct ones).

The product of its (nonzero) digits is 5880, while the sum is 28.

The spelling of 20403075700 in words is "twenty billion, four hundred three million, seventy-five thousand, seven hundred".