1305445132432 has 80 divisors (see below), whose sum is σ = 2924088640000. Its totient is φ = 553024765440.

The previous prime is 1305445132423. The next prime is 1305445132447. The reversal of 1305445132432 is 2342315445031.

It is a junction number, because it is equal to n+sod(n) for n = 1305445132391 and 1305445132400.

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, 5012569 + ... + 5266567.

It is an arithmetic number, because the mean of its divisors is an integer number (36551108000).

Almost surely, 2^{1305445132432} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1305445132432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1462044320000).

1305445132432 is an abundant number, since it is smaller than the sum of its proper divisors (1618643507568).

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

1305445132432 is a wasteful number, since it uses less digits than its factorization.

1305445132432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254544 (or 254538 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 37.

The spelling of 1305445132432 in words is "one trillion, three hundred five billion, four hundred forty-five million, one hundred thirty-two thousand, four hundred thirty-two".