4155121041601 has 4 divisors (see below), whose sum is σ = 4155131573892. Its totient is φ = 4155110509312.

The previous prime is 4155121041569. The next prime is 4155121041629. The reversal of 4155121041601 is 1061401215514.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2014693521201 + 2140427520400 = 1419399^2 + 1463020^2 .

It is a cyclic number.

It is not a de Polignac number, because 4155121041601 - 2⁵ = 4155121041569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4155121041301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4650376 + ... + 5471401.

It is an arithmetic number, because the mean of its divisors is an integer number (1038782893473).

Almost surely, 2^{4155121041601} is an apocalyptic number.

It is an amenable number.

4155121041601 is a deficient number, since it is larger than the sum of its proper divisors (10532291).

4155121041601 is a wasteful number, since it uses less digits than its factorization.

4155121041601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10532290.

The product of its (nonzero) digits is 4800, while the sum is 31.

The spelling of 4155121041601 in words is "four trillion, one hundred fifty-five billion, one hundred twenty-one million, forty-one thousand, six hundred one".