20104335125511 has 32 divisors (see below), whose sum is σ = 32991973045248. Its totient is φ = 10604406159360.

The previous prime is 20104335125509. The next prime is 20104335125513. The reversal of 20104335125511 is 11552153340102.

It is an interprime number because it is at equal distance from previous prime (20104335125509) and next prime (20104335125513).

It is not a de Polignac number, because 20104335125511 - 2¹ = 20104335125509 is a prime.

It is a super-2 number, since 2×20104335125511² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20104335125513) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 69522855 + ... + 69811431.

It is an arithmetic number, because the mean of its divisors is an integer number (1030999157664).

Almost surely, 2^{20104335125511} is an apocalyptic number.

20104335125511 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20104335125511 is a deficient number, since it is larger than the sum of its proper divisors (12887637919737).

20104335125511 is a wasteful number, since it uses less digits than its factorization.

20104335125511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 543791.

The product of its (nonzero) digits is 18000, while the sum is 33.

Adding to 20104335125511 its reverse (11552153340102), we get a palindrome (31656488465613).

The spelling of 20104335125511 in words is "twenty trillion, one hundred four billion, three hundred thirty-five million, one hundred twenty-five thousand, five hundred eleven".