1643245507316 has 24 divisors (see below), whose sum is σ = 3335543123136. Its totient is φ = 693736908480.

The previous prime is 1643245507273. The next prime is 1643245507333. The reversal of 1643245507316 is 6137055423461.

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, 437963345 + ... + 437967096.

It is an arithmetic number, because the mean of its divisors is an integer number (138980963464).

Almost surely, 2^{1643245507316} is an apocalyptic number.

It is an amenable number.

1643245507316 is an abundant number, since it is smaller than the sum of its proper divisors (1692297615820).

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

1643245507316 is a wasteful number, since it uses less digits than its factorization.

1643245507316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 875930519 (or 875930517 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 47.

The spelling of 1643245507316 in words is "one trillion, six hundred forty-three billion, two hundred forty-five million, five hundred seven thousand, three hundred sixteen".