997692512741 has 4 divisors (see below), whose sum is σ = 999220373292. Its totient is φ = 996164652192.

The previous prime is 997692512723. The next prime is 997692512777. The reversal of 997692512741 is 147215296799.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 147215296799 = 93787 ⋅1569677.

It can be written as a sum of positive squares in 2 ways, for example, as 555540659716 + 442151853025 = 745346^2 + 664945^2 .

It is a cyclic number.

It is not a de Polignac number, because 997692512741 - 2²⁶ = 997625403877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (997692512941) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 763929296 + ... + 763930601.

It is an arithmetic number, because the mean of its divisors is an integer number (249805093323).

Almost surely, 2^997692512741 is an apocalyptic number.

It is an amenable number.

997692512741 is a deficient number, since it is larger than the sum of its proper divisors (1527860551).

997692512741 is a wasteful number, since it uses less digits than its factorization.

997692512741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1527860550.

The product of its digits is 17146080, while the sum is 62.

The spelling of 997692512741 in words is "nine hundred ninety-seven billion, six hundred ninety-two million, five hundred twelve thousand, seven hundred forty-one".