278655955463 has 8 divisors (see below), whose sum is σ = 278815171536. Its totient is φ = 278496792000.

The previous prime is 278655955453. The next prime is 278655955493. The reversal of 278655955463 is 364559556872.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 278655955463 - 2³⁰ = 277582213639 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 278655955463.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (278655955453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15034520 + ... + 15053042.

It is an arithmetic number, because the mean of its divisors is an integer number (34851896442).

Almost surely, 2^278655955463 is an apocalyptic number.

278655955463 is a deficient number, since it is larger than the sum of its proper divisors (159216073).

278655955463 is a wasteful number, since it uses less digits than its factorization.

278655955463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26305.

The product of its digits is 272160000, while the sum is 65.

The spelling of 278655955463 in words is "two hundred seventy-eight billion, six hundred fifty-five million, nine hundred fifty-five thousand, four hundred sixty-three".