20453530226551 has 2 divisors, whose sum is σ = 20453530226552. Its totient is φ = 20453530226550.

The previous prime is 20453530226543. The next prime is 20453530226567. The reversal of 20453530226551 is 15562203535402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20453530226551 - 2³ = 20453530226543 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20453530226498 and 20453530226507.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20453530226851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10226765113275 + 10226765113276.

It is an arithmetic number, because the mean of its divisors is an integer number (10226765113276).

Almost surely, 2^{20453530226551} is an apocalyptic number.

20453530226551 is a deficient number, since it is larger than the sum of its proper divisors (1).

20453530226551 is an equidigital number, since it uses as much as digits as its factorization.

20453530226551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080000, while the sum is 43.

The spelling of 20453530226551 in words is "twenty trillion, four hundred fifty-three billion, five hundred thirty million, two hundred twenty-six thousand, five hundred fifty-one".