278069611402 has 12 divisors (see below), whose sum is σ = 458470144818. Its totient is φ = 126395277800.

The previous prime is 278069611349. The next prime is 278069611423. The reversal of 278069611402 is 204116960872.

278069611402 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 277148549601 + 921061801 = 526449^2 + 30349^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 574523749 + ... + 574524232.

Almost surely, 2^278069611402 is an apocalyptic number.

278069611402 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

278069611402 is a deficient number, since it is larger than the sum of its proper divisors (180400533416).

278069611402 is a wasteful number, since it uses less digits than its factorization.

278069611402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1149048005 (or 1149047994 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 46.

The spelling of 278069611402 in words is "two hundred seventy-eight billion, sixty-nine million, six hundred eleven thousand, four hundred two".