278270992275 has 24 divisors (see below), whose sum is σ = 470774124480. Its totient is φ = 144959771040.

The previous prime is 278270992261. The next prime is 278270992277. The reversal of 278270992275 is 572299072872.

It is not a de Polignac number, because 278270992275 - 2¹² = 278270988179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (278270992277) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43139565 + ... + 43146014.

It is an arithmetic number, because the mean of its divisors is an integer number (19615588520).

Almost surely, 2^278270992275 is an apocalyptic number.

278270992275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

278270992275 is a deficient number, since it is larger than the sum of its proper divisors (192503132205).

278270992275 is a wasteful number, since it uses less digits than its factorization.

278270992275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86285635 (or 86285630 counting only the distinct ones).

The product of its (nonzero) digits is 17781120, while the sum is 60.

The spelling of 278270992275 in words is "two hundred seventy-eight billion, two hundred seventy million, nine hundred ninety-two thousand, two hundred seventy-five".