280375941997 has 2 divisors, whose sum is σ = 280375941998. Its totient is φ = 280375941996.

The previous prime is 280375941991. The next prime is 280375942009. The reversal of 280375941997 is 799149573082.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 278584451721 + 1791490276 = 527811^2 + 42326^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-280375941997 is a prime.

It is a super-2 number, since 2×280375941997² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (280375941991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140187970998 + 140187970999.

It is an arithmetic number, because the mean of its divisors is an integer number (140187970999).

Almost surely, 2^280375941997 is an apocalyptic number.

It is an amenable number.

280375941997 is a deficient number, since it is larger than the sum of its proper divisors (1).

280375941997 is an equidigital number, since it uses as much as digits as its factorization.

280375941997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34292160, while the sum is 64.

The spelling of 280375941997 in words is "two hundred eighty billion, three hundred seventy-five million, nine hundred forty-one thousand, nine hundred ninety-seven".