1681248533764 has 12 divisors (see below), whose sum is σ = 2942384062464. Its totient is φ = 840567373064.

The previous prime is 1681248533761. The next prime is 1681248533771. The reversal of 1681248533764 is 4673358421861.

It is a junction number, because it is equal to n+sod(n) for n = 1681248533699 and 1681248533708.

It is not an unprimeable number, because it can be changed into a prime (1681248533761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14156932 + ... + 14275195.

It is an arithmetic number, because the mean of its divisors is an integer number (245198671872).

Almost surely, 2^{1681248533764} is an apocalyptic number.

It is an amenable number.

1681248533764 is a deficient number, since it is larger than the sum of its proper divisors (1261135528700).

1681248533764 is a wasteful number, since it uses less digits than its factorization.

1681248533764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28446914 (or 28446912 counting only the distinct ones).

The product of its digits is 23224320, while the sum is 58.

The spelling of 1681248533764 in words is "one trillion, six hundred eighty-one billion, two hundred forty-eight million, five hundred thirty-three thousand, seven hundred sixty-four".