3261615871 has 2 divisors, whose sum is σ = 3261615872. Its totient is φ = 3261615870.

The previous prime is 3261615859. The next prime is 3261615913. The reversal of 3261615871 is 1785161623.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3261615871 - 2²¹ = 3259518719 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3261615271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1630807935 + 1630807936.

It is an arithmetic number, because the mean of its divisors is an integer number (1630807936).

Almost surely, 2^3261615871 is an apocalyptic number.

3261615871 is a deficient number, since it is larger than the sum of its proper divisors (1).

3261615871 is an equidigital number, since it uses as much as digits as its factorization.

3261615871 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60480, while the sum is 40.

The square root of 3261615871 is about 57110.5583145534. The cubic root of 3261615871 is about 1483.0106524571.

The spelling of 3261615871 in words is "three billion, two hundred sixty-one million, six hundred fifteen thousand, eight hundred seventy-one".