278092558645453 has 2 divisors, whose sum is σ = 278092558645454. Its totient is φ = 278092558645452.

The previous prime is 278092558645439. The next prime is 278092558645477. The reversal of 278092558645453 is 354546855290872.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 239076319940649 + 39016238704804 = 15462093^2 + 6246298^2 .

It is a cyclic number.

It is not a de Polignac number, because 278092558645453 - 2²⁵ = 278092525091021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (278092558645483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 139046279322726 + 139046279322727.

It is an arithmetic number, because the mean of its divisors is an integer number (139046279322727).

Almost surely, 2^{278092558645453} is an apocalyptic number.

It is an amenable number.

278092558645453 is a deficient number, since it is larger than the sum of its proper divisors (1).

278092558645453 is an equidigital number, since it uses as much as digits as its factorization.

278092558645453 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2903040000, while the sum is 73.

The spelling of 278092558645453 in words is "two hundred seventy-eight trillion, ninety-two billion, five hundred fifty-eight million, six hundred forty-five thousand, four hundred fifty-three".