3278265256605 has 16 divisors (see below), whose sum is σ = 5245274502720. Its totient is φ = 1748391439488.

The previous prime is 3278265256601. The next prime is 3278265256627. The reversal of 3278265256605 is 5066525628723.

It is not a de Polignac number, because 3278265256605 - 2² = 3278265256601 is a prime.

It is a super-2 number, since 2×3278265256605² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3278265256601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 670234 + ... + 2646836.

It is an arithmetic number, because the mean of its divisors is an integer number (327829656420).

Almost surely, 2^{3278265256605} is an apocalyptic number.

It is an amenable number.

3278265256605 is a deficient number, since it is larger than the sum of its proper divisors (1967009246115).

3278265256605 is a wasteful number, since it uses less digits than its factorization.

3278265256605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2087180.

The product of its (nonzero) digits is 36288000, while the sum is 57.

The spelling of 3278265256605 in words is "three trillion, two hundred seventy-eight billion, two hundred sixty-five million, two hundred fifty-six thousand, six hundred five".