3278960380061 has 4 divisors (see below), whose sum is σ = 3278968671132. Its totient is φ = 3278952088992.

The previous prime is 3278960380057. The next prime is 3278960380187. The reversal of 3278960380061 is 1600830698723.

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 1707713172025 + 1571247208036 = 1306795^2 + 1253494^2 .

It is a cyclic number.

It is not a de Polignac number, because 3278960380061 - 2² = 3278960380057 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3278960379985 and 3278960380012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3278260380061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3520946 + ... + 4353731.

It is an arithmetic number, because the mean of its divisors is an integer number (819742167783).

Almost surely, 2^{3278960380061} is an apocalyptic number.

It is an amenable number.

3278960380061 is a deficient number, since it is larger than the sum of its proper divisors (8291071).

3278960380061 is an equidigital number, since it uses as much as digits as its factorization.

3278960380061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8291070.

The product of its (nonzero) digits is 2612736, while the sum is 53.

The spelling of 3278960380061 in words is "three trillion, two hundred seventy-eight billion, nine hundred sixty million, three hundred eighty thousand, sixty-one".