4278541167121 has 8 divisors (see below), whose sum is σ = 4619150147304. Its totient is φ = 3939573676800.

The previous prime is 4278541167119. The next prime is 4278541167143. The reversal of 4278541167121 is 1217611458724.

It can be written as a sum of positive squares in 4 ways, for example, as 556574189521 + 3721966977600 = 746039^2 + 1929240^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4278541167121 - 2¹ = 4278541167119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4278541167151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 410367046 + ... + 410377471.

It is an arithmetic number, because the mean of its divisors is an integer number (577393768413).

Almost surely, 2^{4278541167121} is an apocalyptic number.

It is an amenable number.

4278541167121 is a deficient number, since it is larger than the sum of its proper divisors (340608980183).

4278541167121 is a wasteful number, since it uses less digits than its factorization.

4278541167121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 820744931.

The product of its digits is 752640, while the sum is 49.

The spelling of 4278541167121 in words is "four trillion, two hundred seventy-eight billion, five hundred forty-one million, one hundred sixty-seven thousand, one hundred twenty-one".