169680544157663 has 128 divisors (see below), whose sum is σ = 217686865084416. Its totient is φ = 128450337840000.

The previous prime is 169680544157629. The next prime is 169680544157669. The reversal of 169680544157663 is 366751445086961.

It is not a de Polignac number, because 169680544157663 - 2¹⁸ = 169680543895519 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (169680544157669) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 225939472538 + ... + 225939473288.

It is an arithmetic number, because the mean of its divisors is an integer number (1700678633472).

Almost surely, 2^{169680544157663} is an apocalyptic number.

169680544157663 is a deficient number, since it is larger than the sum of its proper divisors (48006320926753).

169680544157663 is a wasteful number, since it uses less digits than its factorization.

169680544157663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2233.

The product of its (nonzero) digits is 783820800, while the sum is 71.

The spelling of 169680544157663 in words is "one hundred sixty-nine trillion, six hundred eighty billion, five hundred forty-four million, one hundred fifty-seven thousand, six hundred sixty-three".