278224321406 has 16 divisors (see below), whose sum is σ = 418837856064. Its totient is φ = 138612363264.

The previous prime is 278224321339. The next prime is 278224321429. The reversal of 278224321406 is 604123422872.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 681926 + ... + 1010678.

It is an arithmetic number, because the mean of its divisors is an integer number (26177366004).

Almost surely, 2^278224321406 is an apocalyptic number.

278224321406 is a deficient number, since it is larger than the sum of its proper divisors (140613534658).

278224321406 is a wasteful number, since it uses less digits than its factorization.

278224321406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330275.

The product of its (nonzero) digits is 258048, while the sum is 41.

The spelling of 278224321406 in words is "two hundred seventy-eight billion, two hundred twenty-four million, three hundred twenty-one thousand, four hundred six".