278341053868 has 6 divisors (see below), whose sum is σ = 487096844276. Its totient is φ = 139170526932.

The previous prime is 278341053821. The next prime is 278341053911. The reversal of 278341053868 is 868350143872.

It is a super-2 number, since 2×278341053868² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34792631730 + ... + 34792631737.

Almost surely, 2^278341053868 is an apocalyptic number.

It is an amenable number.

278341053868 is a deficient number, since it is larger than the sum of its proper divisors (208755790408).

278341053868 is a wasteful number, since it uses less digits than its factorization.

278341053868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69585263471 (or 69585263469 counting only the distinct ones).

The product of its (nonzero) digits is 7741440, while the sum is 55.

The spelling of 278341053868 in words is "two hundred seventy-eight billion, three hundred forty-one million, fifty-three thousand, eight hundred sixty-eight".