3145256139161 has 2 divisors, whose sum is σ = 3145256139162. Its totient is φ = 3145256139160.

The previous prime is 3145256139149. The next prime is 3145256139191. The reversal of 3145256139161 is 1619316525413.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1793105786761 + 1352150352400 = 1339069^2 + 1162820^2 .

It is a cyclic number.

It is not a de Polignac number, because 3145256139161 - 2³⁴ = 3128076269977 is a prime.

It is not a weakly prime, because it can be changed into another prime (3145256139131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1572628069580 + 1572628069581.

It is an arithmetic number, because the mean of its divisors is an integer number (1572628069581).

Almost surely, 2^{3145256139161} is an apocalyptic number.

It is an amenable number.

3145256139161 is a deficient number, since it is larger than the sum of its proper divisors (1).

3145256139161 is an equidigital number, since it uses as much as digits as its factorization.

3145256139161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 583200, while the sum is 47.

The spelling of 3145256139161 in words is "three trillion, one hundred forty-five billion, two hundred fifty-six million, one hundred thirty-nine thousand, one hundred sixty-one".