3480405728081 has 2 divisors, whose sum is σ = 3480405728082. Its totient is φ = 3480405728080.

The previous prime is 3480405728021. The next prime is 3480405728143. The reversal of 3480405728081 is 1808275040843.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2103500619025 + 1376905109056 = 1450345^2 + 1173416^2 .

It is a cyclic number.

It is not a de Polignac number, because 3480405728081 - 2²⁶ = 3480338619217 is a prime.

It is a super-2 number, since 2×3480405728081² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3480405728021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1740202864040 + 1740202864041.

It is an arithmetic number, because the mean of its divisors is an integer number (1740202864041).

Almost surely, 2^{3480405728081} is an apocalyptic number.

It is an amenable number.

3480405728081 is a deficient number, since it is larger than the sum of its proper divisors (1).

3480405728081 is an equidigital number, since it uses as much as digits as its factorization.

3480405728081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1720320, while the sum is 50.

The spelling of 3480405728081 in words is "three trillion, four hundred eighty billion, four hundred five million, seven hundred twenty-eight thousand, eighty-one".