20350002040 has 16 divisors (see below), whose sum is σ = 45787504680. Its totient is φ = 8140000800.

The previous prime is 20350002017. The next prime is 20350002089. The reversal of 20350002040 is 4020005302.

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 3 ways as a sum of consecutive naturals, for example, 254374986 + ... + 254375065.

Almost surely, 2^20350002040 is an apocalyptic number.

20350002040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20350002040 is an abundant number, since it is smaller than the sum of its proper divisors (25437502640).

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

20350002040 is a wasteful number, since it uses less digits than its factorization.

20350002040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508750062 (or 508750058 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 16.

Adding to 20350002040 its reverse (4020005302), we get a palindrome (24370007342).

The spelling of 20350002040 in words is "twenty billion, three hundred fifty million, two thousand, forty".