20457348080453 has 2 divisors, whose sum is σ = 20457348080454. Its totient is φ = 20457348080452.

The previous prime is 20457348080359. The next prime is 20457348080471. The reversal of 20457348080453 is 35408084375402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17866658248609 + 2590689831844 = 4226897^2 + 1609562^2 .

It is a cyclic number.

It is not a de Polignac number, because 20457348080453 - 2²² = 20457343886149 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20457348080395 and 20457348080404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20457348080053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10228674040226 + 10228674040227.

It is an arithmetic number, because the mean of its divisors is an integer number (10228674040227).

Almost surely, 2^{20457348080453} is an apocalyptic number.

It is an amenable number.

20457348080453 is a deficient number, since it is larger than the sum of its proper divisors (1).

20457348080453 is an equidigital number, since it uses as much as digits as its factorization.

20457348080453 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12902400, while the sum is 53.

Subtracting from 20457348080453 its sum of digits (53), we obtain a square (20457348080400 = 4522980²).

The spelling of 20457348080453 in words is "twenty trillion, four hundred fifty-seven billion, three hundred forty-eight million, eighty thousand, four hundred fifty-three".