278989126017 has 12 divisors (see below), whose sum is σ = 432717828336. Its totient is φ = 159422357640.

The previous prime is 278989126007. The next prime is 278989126027. The reversal of 278989126017 is 710621989872.

It is an interprime number because it is at equal distance from previous prime (278989126007) and next prime (278989126027).

It is not a de Polignac number, because 278989126017 - 2⁶ = 278989125953 is a prime.

It is a hoax number, since the sum of its digits (60) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (278989126007) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 948942459 + ... + 948942752.

It is an arithmetic number, because the mean of its divisors is an integer number (36059819028).

Almost surely, 2^278989126017 is an apocalyptic number.

It is an amenable number.

278989126017 is a deficient number, since it is larger than the sum of its proper divisors (153728702319).

278989126017 is a wasteful number, since it uses less digits than its factorization.

278989126017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1897885228 (or 1897885221 counting only the distinct ones).

The product of its (nonzero) digits is 6096384, while the sum is 60.

The spelling of 278989126017 in words is "two hundred seventy-eight billion, nine hundred eighty-nine million, one hundred twenty-six thousand, seventeen".