278960552639 has 4 divisors (see below), whose sum is σ = 279084482280. Its totient is φ = 278836623000.

The previous prime is 278960552603. The next prime is 278960552677. The reversal of 278960552639 is 936255069872.

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 278960552639 - 2¹² = 278960548543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (278960582639) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61961444 + ... + 61965945.

It is an arithmetic number, because the mean of its divisors is an integer number (69771120570).

Almost surely, 2^278960552639 is an apocalyptic number.

278960552639 is a deficient number, since it is larger than the sum of its proper divisors (123929641).

278960552639 is a wasteful number, since it uses less digits than its factorization.

278960552639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123929640.

The product of its (nonzero) digits is 48988800, while the sum is 62.

The spelling of 278960552639 in words is "two hundred seventy-eight billion, nine hundred sixty million, five hundred fifty-two thousand, six hundred thirty-nine".