20201014515511 has 2 divisors, whose sum is σ = 20201014515512. Its totient is φ = 20201014515510.

The previous prime is 20201014515481. The next prime is 20201014515553. The reversal of 20201014515511 is 11551541010202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20201014515511 - 2²⁵ = 20200980961079 is a prime.

It is a super-2 number, since 2×20201014515511² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20201014515511.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20201014515911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10100507257755 + 10100507257756.

It is an arithmetic number, because the mean of its divisors is an integer number (10100507257756).

Almost surely, 2^{20201014515511} is an apocalyptic number.

20201014515511 is a deficient number, since it is larger than the sum of its proper divisors (1).

20201014515511 is an equidigital number, since it uses as much as digits as its factorization.

20201014515511 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2000, while the sum is 28.

Adding to 20201014515511 its reverse (11551541010202), we get a palindrome (31752555525713).

The spelling of 20201014515511 in words is "twenty trillion, two hundred one billion, fourteen million, five hundred fifteen thousand, five hundred eleven".