1245704810816 has 28 divisors (see below), whose sum is σ = 2557184987220. Its totient is φ = 601374735360.

The previous prime is 1245704810797. The next prime is 1245704810821. The reversal of 1245704810816 is 6180184075421.

It can be written as a sum of positive squares in 2 ways, for example, as 486534150400 + 759170660416 = 697520^2 + 871304^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 335586725 + ... + 335590436.

Almost surely, 2^{1245704810816} is an apocalyptic number.

1245704810816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1245704810816 is an abundant number, since it is smaller than the sum of its proper divisors (1311480176404).

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

1245704810816 is an equidigital number, since it uses as much as digits as its factorization.

1245704810816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 671177202 (or 671177192 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 47.

The spelling of 1245704810816 in words is "one trillion, two hundred forty-five billion, seven hundred four million, eight hundred ten thousand, eight hundred sixteen".