1681747031002 has 16 divisors (see below), whose sum is σ = 2528531497800. Its totient is φ = 838903832640.

The previous prime is 1681747030993. The next prime is 1681747031051. The reversal of 1681747031002 is 2001307471861.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 412499192121 + 1269247838881 = 642261^2 + 1126609^2 .

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, 5255824 + ... + 5566612.

Almost surely, 2^{1681747031002} is an apocalyptic number.

1681747031002 is a deficient number, since it is larger than the sum of its proper divisors (846784466798).

1681747031002 is a wasteful number, since it uses less digits than its factorization.

1681747031002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317121.

The product of its (nonzero) digits is 56448, while the sum is 40.

The spelling of 1681747031002 in words is "one trillion, six hundred eighty-one billion, seven hundred forty-seven million, thirty-one thousand, two".