278135888051 has 16 divisors (see below), whose sum is σ = 328149915648. Its totient is φ = 230693184000.

The previous prime is 278135888011. The next prime is 278135888071. The reversal of 278135888051 is 150888531872.

It is a cyclic number.

It is not a de Polignac number, because 278135888051 - 2²² = 278131693747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (278135888011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3080516 + ... + 3169518.

It is an arithmetic number, because the mean of its divisors is an integer number (20509369728).

Almost surely, 2^278135888051 is an apocalyptic number.

278135888051 is a deficient number, since it is larger than the sum of its proper divisors (50014027597).

278135888051 is a wasteful number, since it uses less digits than its factorization.

278135888051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103442.

The product of its (nonzero) digits is 4300800, while the sum is 56.

The spelling of 278135888051 in words is "two hundred seventy-eight billion, one hundred thirty-five million, eight hundred eighty-eight thousand, fifty-one".