3278926390545 has 36 divisors (see below), whose sum is σ = 6154292624220. Its totient is φ = 1614240680832.

The previous prime is 3278926390543. The next prime is 3278926390561. The reversal of 3278926390545 is 5450936298723.

3278926390545 is a `hidden beast` number, since 3 + 2 + 7 + 89 + 2 + 6 + 3 + 9 + 0 + 545 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 1017824730129 + 2261101660416 = 1008873^2 + 1503696^2 .

It is not a de Polignac number, because 3278926390545 - 2¹ = 3278926390543 is a prime.

It is a super-2 number, since 2×3278926390545² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3278926390543) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 215569410 + ... + 215584619.

It is an arithmetic number, because the mean of its divisors is an integer number (170952572895).

Almost surely, 2^{3278926390545} is an apocalyptic number.

It is an amenable number.

3278926390545 is a deficient number, since it is larger than the sum of its proper divisors (2875366233675).

3278926390545 is a wasteful number, since it uses less digits than its factorization.

3278926390545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431154066 (or 431154050 counting only the distinct ones).

The product of its (nonzero) digits is 97977600, while the sum is 63.

The spelling of 3278926390545 in words is "three trillion, two hundred seventy-eight billion, nine hundred twenty-six million, three hundred ninety thousand, five hundred forty-five".