1697994031041 has 81 divisors (see below), whose sum is σ = 3136599321219. Its totient is φ = 881918452800.

The previous prime is 1697994031009. The next prime is 1697994031049. The reversal of 1697994031041 is 1401304997961.

The square root of 1697994031041 is 1303071.

It is a perfect power (a square), and thus also a powerful number.

1697994031041 is a `hidden beast` number, since 1 + 69 + 79 + 9 + 403 + 104 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1678784071041 + 19209960000 = 1295679^2 + 138600^2 .

It is not a de Polignac number, because 1697994031041 - 2⁵ = 1697994031009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1697994031049) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 301006581 + ... + 301012221.

Almost surely, 2^{1697994031041} is an apocalyptic number.

1697994031041 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1697994031041 is the 1303071-st square number.

1697994031041 is the 651536-th centered octagonal number.

It is an amenable number.

1697994031041 is a deficient number, since it is larger than the sum of its proper divisors (1438605290178).

1697994031041 is an frugal number, since it uses more digits than its factorization.

1697994031041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11324 (or 5662 counting only the distinct ones).

The product of its (nonzero) digits is 1469664, while the sum is 54.

The spelling of 1697994031041 in words is "one trillion, six hundred ninety-seven billion, nine hundred ninety-four million, thirty-one thousand, forty-one".