20041252511 has 4 divisors (see below), whose sum is σ = 22904288592. Its totient is φ = 17178216432.

The previous prime is 20041252499. The next prime is 20041252523. The reversal of 20041252511 is 11525214002.

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

It is an interprime number because it is at equal distance from previous prime (20041252499) and next prime (20041252523).

It is a cyclic number.

It is not a de Polignac number, because 20041252511 - 2³⁰ = 18967510687 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 (20041282511) 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, 1431518030 + ... + 1431518043.

It is an arithmetic number, because the mean of its divisors is an integer number (5726072148).

Almost surely, 2^20041252511 is an apocalyptic number.

20041252511 is a deficient number, since it is larger than the sum of its proper divisors (2863036081).

20041252511 is an equidigital number, since it uses as much as digits as its factorization.

20041252511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2863036080.

The product of its (nonzero) digits is 800, while the sum is 23.

Adding to 20041252511 its reverse (11525214002), we get a palindrome (31566466513).

The spelling of 20041252511 in words is "twenty billion, forty-one million, two hundred fifty-two thousand, five hundred eleven".