20503970115877 has 4 divisors (see below), whose sum is σ = 20517362651776. Its totient is φ = 20490577579980.

The previous prime is 20503970115841. The next prime is 20503970115883. The reversal of 20503970115877 is 77851107930502.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20503970115877 - 2⁷ = 20503970115749 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 (20503970115887) 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, 6696265653 + ... + 6696268714.

It is an arithmetic number, because the mean of its divisors is an integer number (5129340662944).

Almost surely, 2^{20503970115877} is an apocalyptic number.

It is an amenable number.

20503970115877 is a deficient number, since it is larger than the sum of its proper divisors (13392535899).

20503970115877 is a wasteful number, since it uses less digits than its factorization.

20503970115877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13392535898.

The product of its (nonzero) digits is 3704400, while the sum is 55.

The spelling of 20503970115877 in words is "twenty trillion, five hundred three billion, nine hundred seventy million, one hundred fifteen thousand, eight hundred seventy-seven".