278471043071 has 4 divisors (see below), whose sum is σ = 299891892552. Its totient is φ = 257050193592.

The previous prime is 278471043049. The next prime is 278471043073. The reversal of 278471043071 is 170340174872.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 278471043071 - 2²² = 278466848767 is a prime.

It is a super-3 number, since 3×278471043071³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (278471043073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10710424721 + ... + 10710424746.

It is an arithmetic number, because the mean of its divisors is an integer number (74972973138).

Almost surely, 2^278471043071 is an apocalyptic number.

278471043071 is a deficient number, since it is larger than the sum of its proper divisors (21420849481).

278471043071 is a wasteful number, since it uses less digits than its factorization.

278471043071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21420849480.

The product of its (nonzero) digits is 263424, while the sum is 44.

The spelling of 278471043071 in words is "two hundred seventy-eight billion, four hundred seventy-one million, forty-three thousand, seventy-one".