20507463124373 has 4 divisors (see below), whose sum is σ = 20510496330828. Its totient is φ = 20504429917920.

The previous prime is 20507463124367. The next prime is 20507463124381. The reversal of 20507463124373 is 37342136470502.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18786520572964 + 1720942551409 = 4334342^2 + 1311847^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20507463124373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20507463126373) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1516593086 + ... + 1516606607.

It is an arithmetic number, because the mean of its divisors is an integer number (5127624082707).

Almost surely, 2^{20507463124373} is an apocalyptic number.

It is an amenable number.

20507463124373 is a deficient number, since it is larger than the sum of its proper divisors (3033206455).

20507463124373 is an equidigital number, since it uses as much as digits as its factorization.

20507463124373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3033206454.

The product of its (nonzero) digits is 2540160, while the sum is 47.

Adding to 20507463124373 its reverse (37342136470502), we get a palindrome (57849599594875).

The spelling of 20507463124373 in words is "twenty trillion, five hundred seven billion, four hundred sixty-three million, one hundred twenty-four thousand, three hundred seventy-three".