278055088523 has 4 divisors (see below), whose sum is σ = 278056314888. Its totient is φ = 278053862160.

The previous prime is 278055088513. The next prime is 278055088561. The reversal of 278055088523 is 325880550872.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-278055088523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (278055088513) 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, 162833 + ... + 763298.

It is an arithmetic number, because the mean of its divisors is an integer number (69514078722).

Almost surely, 2^278055088523 is an apocalyptic number.

278055088523 is a deficient number, since it is larger than the sum of its proper divisors (1226365).

278055088523 is an equidigital number, since it uses as much as digits as its factorization.

278055088523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1226364.

The product of its (nonzero) digits is 5376000, while the sum is 53.

The spelling of 278055088523 in words is "two hundred seventy-eight billion, fifty-five million, eighty-eight thousand, five hundred twenty-three".