281474977042397 has 2 divisors, whose sum is σ = 281474977042398. Its totient is φ = 281474977042396.

The previous prime is 281474977042351. The next prime is 281474977042547. The reversal of 281474977042397 is 793240779474182.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 281467259244196 + 7717798201 = 16776986^2 + 87851^2 .

It is a cyclic number.

It is not a de Polignac number, because 281474977042397 - 2²² = 281474972848093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (281474977042307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140737488521198 + 140737488521199.

It is an arithmetic number, because the mean of its divisors is an integer number (140737488521199).

Almost surely, 2^{281474977042397} is an apocalyptic number.

It is an amenable number.

281474977042397 is a deficient number, since it is larger than the sum of its proper divisors (1).

281474977042397 is an equidigital number, since it uses as much as digits as its factorization.

281474977042397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1194891264, while the sum is 74.

The spelling of 281474977042397 in words is "two hundred eighty-one trillion, four hundred seventy-four billion, nine hundred seventy-seven million, forty-two thousand, three hundred ninety-seven".