20253411145 has 16 divisors (see below), whose sum is σ = 26962943040. Its totient is φ = 14480094400.

The previous prime is 20253411121. The next prime is 20253411229. The reversal of 20253411145 is 54111435202.

It is a de Polignac number, because none of the positive numbers 2^k-20253411145 is a prime.

It is a super-2 number, since 2×20253411145² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3117466 + ... + 3123955.

It is an arithmetic number, because the mean of its divisors is an integer number (1685183940).

Almost surely, 2^20253411145 is an apocalyptic number.

It is an amenable number.

20253411145 is a deficient number, since it is larger than the sum of its proper divisors (6709531895).

20253411145 is a wasteful number, since it uses less digits than its factorization.

20253411145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6241496.

The product of its (nonzero) digits is 4800, while the sum is 28.

Adding to 20253411145 its reverse (54111435202), we get a palindrome (74364846347).

The spelling of 20253411145 in words is "twenty billion, two hundred fifty-three million, four hundred eleven thousand, one hundred forty-five".