20526751551353 has 6 divisors (see below), whose sum is σ = 21805234347246. Its totient is φ = 19319295577472.

The previous prime is 20526751551343. The next prime is 20526751551359. The reversal of 20526751551353 is 35315515762502.

It can be written as a sum of positive squares in 3 ways, for example, as 6683946720889 + 13842804830464 = 2585333^2 + 3720592^2 .

It is not a de Polignac number, because 20526751551353 - 2²⁴ = 20526734774137 is a prime.

It is a super-2 number, since 2×20526751551353² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20526751551359) 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 5 ways as a sum of consecutive naturals, for example, 35513410700 + ... + 35513411277.

It is an arithmetic number, because the mean of its divisors is an integer number (3634205724541).

Almost surely, 2^{20526751551353} is an apocalyptic number.

It is an amenable number.

20526751551353 is a deficient number, since it is larger than the sum of its proper divisors (1278482795893).

20526751551353 is an equidigital number, since it uses as much as digits as its factorization.

20526751551353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71026822011 (or 71026821994 counting only the distinct ones).

The product of its (nonzero) digits is 4725000, while the sum is 50.

The spelling of 20526751551353 in words is "twenty trillion, five hundred twenty-six billion, seven hundred fifty-one million, five hundred fifty-one thousand, three hundred fifty-three".