1316443246646 has 32 divisors (see below), whose sum is σ = 2287358012448. Its totient is φ = 561588797440.

The previous prime is 1316443246607. The next prime is 1316443246649. The reversal of 1316443246646 is 6466423446131.

It is a super-2 number, since 2×1316443246646² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1316443246594 and 1316443246603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1316443246649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4853675 + ... + 5117718.

It is an arithmetic number, because the mean of its divisors is an integer number (71479937889).

Almost surely, 2^{1316443246646} is an apocalyptic number.

1316443246646 is a deficient number, since it is larger than the sum of its proper divisors (970914765802).

1316443246646 is a wasteful number, since it uses less digits than its factorization.

1316443246646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9971776.

The product of its digits is 5971968, while the sum is 50.

The spelling of 1316443246646 in words is "one trillion, three hundred sixteen billion, four hundred forty-three million, two hundred forty-six thousand, six hundred forty-six".