1252340662646 has 4 divisors (see below), whose sum is σ = 1878510993972. Its totient is φ = 626170331322.

The previous prime is 1252340662619. The next prime is 1252340662663. The reversal of 1252340662646 is 6462660432521.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1252340662646.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 313085165660 + ... + 313085165663.

It is an arithmetic number, because the mean of its divisors is an integer number (469627748493).

Almost surely, 2^{1252340662646} is an apocalyptic number.

1252340662646 is a deficient number, since it is larger than the sum of its proper divisors (626170331326).

1252340662646 is an equidigital number, since it uses as much as digits as its factorization.

1252340662646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 626170331325.

The product of its (nonzero) digits is 2488320, while the sum is 47.

The spelling of 1252340662646 in words is "one trillion, two hundred fifty-two billion, three hundred forty million, six hundred sixty-two thousand, six hundred forty-six".