3217825429945 has 16 divisors (see below), whose sum is σ = 4645281824640. Its totient is φ = 2090376820224.

The previous prime is 3217825429891. The next prime is 3217825429999. The reversal of 3217825429945 is 5499245287123.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3217825429891) and next prime (3217825429999).

It is not a de Polignac number, because 3217825429945 - 2¹⁹ = 3217824905657 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2419416952 + ... + 2419418281.

It is an arithmetic number, because the mean of its divisors is an integer number (290330114040).

Almost surely, 2^{3217825429945} is an apocalyptic number.

3217825429945 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3217825429945 is a deficient number, since it is larger than the sum of its proper divisors (1427456394695).

3217825429945 is a wasteful number, since it uses less digits than its factorization.

3217825429945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4838835264.

The product of its digits is 43545600, while the sum is 61.

The spelling of 3217825429945 in words is "three trillion, two hundred seventeen billion, eight hundred twenty-five million, four hundred twenty-nine thousand, nine hundred forty-five".