20503175051 has 4 divisors (see below), whose sum is σ = 20684619192. Its totient is φ = 20321730912.

The previous prime is 20503175029. The next prime is 20503175059. The reversal of 20503175051 is 15057130502.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 20503175051 - 2¹⁴ = 20503158667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20503175059) 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, 90721901 + ... + 90722126.

It is an arithmetic number, because the mean of its divisors is an integer number (5171154798).

Almost surely, 2^20503175051 is an apocalyptic number.

20503175051 is a deficient number, since it is larger than the sum of its proper divisors (181444141).

20503175051 is a wasteful number, since it uses less digits than its factorization.

20503175051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181444140.

The product of its (nonzero) digits is 5250, while the sum is 29.

It can be divided in two parts, 205031 and 75051, that added together give a palindrome (280082).

The spelling of 20503175051 in words is "twenty billion, five hundred three million, one hundred seventy-five thousand, fifty-one".