281480134933453 has 2 divisors, whose sum is σ = 281480134933454. Its totient is φ = 281480134933452.

The previous prime is 281480134933423. The next prime is 281480134933519. The reversal of 281480134933453 is 354339431084182.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 203054463079524 + 78425671853929 = 14249718^2 + 8855827^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-281480134933453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (281480134933423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140740067466726 + 140740067466727.

It is an arithmetic number, because the mean of its divisors is an integer number (140740067466727).

Almost surely, 2^{281480134933453} is an apocalyptic number.

It is an amenable number.

281480134933453 is a deficient number, since it is larger than the sum of its proper divisors (1).

281480134933453 is an equidigital number, since it uses as much as digits as its factorization.

281480134933453 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 29859840, while the sum is 58.

The spelling of 281480134933453 in words is "two hundred eighty-one trillion, four hundred eighty billion, one hundred thirty-four million, nine hundred thirty-three thousand, four hundred fifty-three".