280126438597 has 2 divisors, whose sum is σ = 280126438598. Its totient is φ = 280126438596.

The previous prime is 280126438561. The next prime is 280126438619. The reversal of 280126438597 is 795834621082.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 271431622081 + 8694816516 = 520991^2 + 93246^2 .

It is a cyclic number.

It is not a de Polignac number, because 280126438597 - 2²⁷ = 279992220869 is a prime.

It is a super-2 number, since 2×280126438597² (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 (280126438547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140063219298 + 140063219299.

It is an arithmetic number, because the mean of its divisors is an integer number (140063219299).

It is a 1-persistent number, because it is pandigital, but 2⋅280126438597 = 560252877194 is not.

Almost surely, 2^280126438597 is an apocalyptic number.

It is an amenable number.

280126438597 is a deficient number, since it is larger than the sum of its proper divisors (1).

280126438597 is an equidigital number, since it uses as much as digits as its factorization.

280126438597 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5806080, while the sum is 55.

The spelling of 280126438597 in words is "two hundred eighty billion, one hundred twenty-six million, four hundred thirty-eight thousand, five hundred ninety-seven".