3215496820105 has 4 divisors (see below), whose sum is σ = 3858596184132. Its totient is φ = 2572397456080.

The previous prime is 3215496820051. The next prime is 3215496820147. The reversal of 3215496820105 is 5010286945123.

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 1070771717961 + 2144725102144 = 1034781^2 + 1464488^2 .

It is not a de Polignac number, because 3215496820105 - 2⁹ = 3215496819593 is a prime.

It is a super-2 number, since 2×3215496820105² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 321549682006 + ... + 321549682015.

It is an arithmetic number, because the mean of its divisors is an integer number (964649046033).

Almost surely, 2^{3215496820105} is an apocalyptic number.

It is an amenable number.

3215496820105 is a deficient number, since it is larger than the sum of its proper divisors (643099364027).

3215496820105 is an equidigital number, since it uses as much as digits as its factorization.

3215496820105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 643099364026.

The product of its (nonzero) digits is 518400, while the sum is 46.

The spelling of 3215496820105 in words is "three trillion, two hundred fifteen billion, four hundred ninety-six million, eight hundred twenty thousand, one hundred five".