1681497763159 has 16 divisors (see below), whose sum is σ = 1782084823200. Its totient is φ = 1581097621504.

The previous prime is 1681497763157. The next prime is 1681497763201. The reversal of 1681497763159 is 9513677941861.

It is a cyclic number.

It is not a de Polignac number, because 1681497763159 - 2¹ = 1681497763157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1681497763094 and 1681497763103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1681497763151) 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, 87765009 + ... + 87784165.

It is an arithmetic number, because the mean of its divisors is an integer number (111380301450).

Almost surely, 2^{1681497763159} is an apocalyptic number.

1681497763159 is a deficient number, since it is larger than the sum of its proper divisors (100587060041).

1681497763159 is a wasteful number, since it uses less digits than its factorization.

1681497763159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23762.

The product of its digits is 68584320, while the sum is 67.

The spelling of 1681497763159 in words is "one trillion, six hundred eighty-one billion, four hundred ninety-seven million, seven hundred sixty-three thousand, one hundred fifty-nine".