4278013161 has 16 divisors (see below), whose sum is σ = 6087112704. Its totient is φ = 2663103744.

The previous prime is 4278013139. The next prime is 4278013193. The reversal of 4278013161 is 1613108724.

It is not a de Polignac number, because 4278013161 - 2²³ = 4269624553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4278013261) 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, 323770 + ... + 336723.

It is an arithmetic number, because the mean of its divisors is an integer number (380444544).

Almost surely, 2^4278013161 is an apocalyptic number.

It is an amenable number.

4278013161 is a deficient number, since it is larger than the sum of its proper divisors (1809099543).

4278013161 is a wasteful number, since it uses less digits than its factorization.

4278013161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660640.

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 4278013161 is about 65406.5223123810. The cubic root of 4278013161 is about 1623.3570026874.

The spelling of 4278013161 in words is "four billion, two hundred seventy-eight million, thirteen thousand, one hundred sixty-one".