20511252322611 has 8 divisors (see below), whose sum is σ = 27352084347024. Its totient is φ = 13672294256640.

The previous prime is 20511252322579. The next prime is 20511252322643. The reversal of 20511252322611 is 11622325211502.

It is an interprime number because it is at equal distance from previous prime (20511252322579) and next prime (20511252322643).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20511252322611 - 2⁵ = 20511252322579 is a prime.

It is a super-2 number, since 2×20511252322611² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20511252332611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 468464070 + ... + 468507851.

It is an arithmetic number, because the mean of its divisors is an integer number (3419010543378).

Almost surely, 2^{20511252322611} is an apocalyptic number.

20511252322611 is a deficient number, since it is larger than the sum of its proper divisors (6840832024413).

20511252322611 is an equidigital number, since it uses as much as digits as its factorization.

20511252322611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 936979221.

The product of its (nonzero) digits is 14400, while the sum is 33.

The spelling of 20511252322611 in words is "twenty trillion, five hundred eleven billion, two hundred fifty-two million, three hundred twenty-two thousand, six hundred eleven".