20345032363540 has 72 divisors (see below), whose sum is σ = 45801996914520. Its totient is φ = 7589037201408.

The previous prime is 20345032363519. The next prime is 20345032363549. The reversal of 20345032363540 is 4536323054302.

It can be written as a sum of positive squares in 12 ways, for example, as 147162769924 + 20197869593616 = 383618^2 + 4494204^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20345032363493 and 20345032363502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20345032363549) 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 23 ways as a sum of consecutive naturals, for example, 15516319 + ... + 16776358.

It is an arithmetic number, because the mean of its divisors is an integer number (636138846035).

Almost surely, 2^{20345032363540} is an apocalyptic number.

20345032363540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20345032363540 is an abundant number, since it is smaller than the sum of its proper divisors (25456964550980).

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

20345032363540 is a wasteful number, since it uses less digits than its factorization.

20345032363540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32292829 (or 32292810 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 40.

The spelling of 20345032363540 in words is "twenty trillion, three hundred forty-five billion, thirty-two million, three hundred sixty-three thousand, five hundred forty".