1601690641924 has 12 divisors (see below), whose sum is σ = 2810473260364. Its totient is φ = 798698281824.

The previous prime is 1601690641921. The next prime is 1601690641973. The reversal of 1601690641924 is 4291460961061.

It can be written as a sum of positive squares in 2 ways, for example, as 929238160900 + 672452481024 = 963970^2 + 820032^2 .

It is not an unprimeable number, because it can be changed into a prime (1601690641921) 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, 536758107 + ... + 536761090.

Almost surely, 2^{1601690641924} is an apocalyptic number.

It is an amenable number.

1601690641924 is a deficient number, since it is larger than the sum of its proper divisors (1208782618440).

1601690641924 is a wasteful number, since it uses less digits than its factorization.

1601690641924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1073519574 (or 1073519572 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 49.

The spelling of 1601690641924 in words is "one trillion, six hundred one billion, six hundred ninety million, six hundred forty-one thousand, nine hundred twenty-four".