4012115144561 has 2 divisors, whose sum is σ = 4012115144562. Its totient is φ = 4012115144560.

The previous prime is 4012115144509. The next prime is 4012115144567. The reversal of 4012115144561 is 1654415112104.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3960259201600 + 51855942961 = 1990040^2 + 227719^2 .

It is a cyclic number.

It is not a de Polignac number, because 4012115144561 - 2³⁰ = 4011041402737 is a prime.

It is not a weakly prime, because it can be changed into another prime (4012115144567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2006057572280 + 2006057572281.

It is an arithmetic number, because the mean of its divisors is an integer number (2006057572281).

Almost surely, 2^{4012115144561} is an apocalyptic number.

It is an amenable number.

4012115144561 is a deficient number, since it is larger than the sum of its proper divisors (1).

4012115144561 is an equidigital number, since it uses as much as digits as its factorization.

4012115144561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19200, while the sum is 35.

The spelling of 4012115144561 in words is "four trillion, twelve billion, one hundred fifteen million, one hundred forty-four thousand, five hundred sixty-one".