20503030007 has 16 divisors (see below), whose sum is σ = 21171870720. Its totient is φ = 19845016032.

The previous prime is 20503029977. The next prime is 20503030027. The reversal of 20503030007 is 70003030502.

It is a cyclic number.

It is not a de Polignac number, because 20503030007 - 2¹⁰ = 20503028983 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 (20503030027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1712213 + ... + 1724145.

It is an arithmetic number, because the mean of its divisors is an integer number (1323241920).

Almost surely, 2^20503030007 is an apocalyptic number.

20503030007 is a deficient number, since it is larger than the sum of its proper divisors (668840713).

20503030007 is a wasteful number, since it uses less digits than its factorization.

20503030007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12382.

The product of its (nonzero) digits is 630, while the sum is 20.

Adding to 20503030007 its reverse (70003030502), we get a palindrome (90506060509).

The spelling of 20503030007 in words is "twenty billion, five hundred three million, thirty thousand, seven".