1645933490448 has 80 divisors (see below), whose sum is σ = 4615127279616. Its totient is φ = 502453324800.

The previous prime is 1645933490431. The next prime is 1645933490473. The reversal of 1645933490448 is 8440943395461.

It is a junction number, because it is equal to n+sod(n) for n = 1645933490391 and 1645933490400.

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, 10305453 + ... + 10463948.

Almost surely, 2^{1645933490448} is an apocalyptic number.

It is an amenable number.

1645933490448 is an abundant number, since it is smaller than the sum of its proper divisors (2969193789168).

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

1645933490448 is a wasteful number, since it uses less digits than its factorization.

1645933490448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20769552 (or 20769546 counting only the distinct ones).

The product of its (nonzero) digits is 44789760, while the sum is 60.

The spelling of 1645933490448 in words is "one trillion, six hundred forty-five billion, nine hundred thirty-three million, four hundred ninety thousand, four hundred forty-eight".