1681156143296 has 56 divisors (see below), whose sum is σ = 3884558286240. Its totient is φ = 706901225472.

The previous prime is 1681156143223. The next prime is 1681156143313. The reversal of 1681156143296 is 6923416511861.

It is a tau number, because it is divible by the number of its divisors (56).

It is a Harshad number since it is a multiple of its sum of digits (53).

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, 35377961 + ... + 35425448.

Almost surely, 2^{1681156143296} is an apocalyptic number.

1681156143296 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1681156143296 is an abundant number, since it is smaller than the sum of its proper divisors (2203402142944).

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

1681156143296 is an equidigital number, since it uses as much as digits as its factorization.

1681156143296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70803481 (or 70803471 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 53.

The spelling of 1681156143296 in words is "one trillion, six hundred eighty-one billion, one hundred fifty-six million, one hundred forty-three thousand, two hundred ninety-six".