1645471906232 has 32 divisors (see below), whose sum is σ = 3846557704320. Its totient is φ = 641092950240.

The previous prime is 1645471906223. The next prime is 1645471906291. The reversal of 1645471906232 is 2326091745461.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1335609698 + ... + 1335610929.

It is an arithmetic number, because the mean of its divisors is an integer number (120204928260).

Almost surely, 2^{1645471906232} is an apocalyptic number.

It is an amenable number.

1645471906232 is an abundant number, since it is smaller than the sum of its proper divisors (2201085798088).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1645471906232 is a wasteful number, since it uses less digits than its factorization.

1645471906232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2671220651 (or 2671220647 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 50.

The spelling of 1645471906232 in words is "one trillion, six hundred forty-five billion, four hundred seventy-one million, nine hundred six thousand, two hundred thirty-two".