997197726598101 has 80 divisors (see below), whose sum is σ = 1742112305304448. Its totient is φ = 556551959040000.

The previous prime is 997197726598067. The next prime is 997197726598111. The reversal of 997197726598101 is 101895627791799.

997197726598101 is a `hidden beast` number, since 9 + 9 + 7 + 1 + 9 + 7 + 7 + 2 + 6 + 598 + 10 + 1 = 666.

It is not a de Polignac number, because 997197726598101 - 2⁶ = 997197726598037 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (81).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (997197726598111) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 584316321 + ... + 586020441.

Almost surely, 2^{997197726598101} is an apocalyptic number.

It is an amenable number.

997197726598101 is a deficient number, since it is larger than the sum of its proper divisors (744914578706347).

997197726598101 is a wasteful number, since it uses less digits than its factorization.

997197726598101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1728184 (or 1728175 counting only the distinct ones).

The product of its (nonzero) digits is 1080203040, while the sum is 81.

The spelling of 997197726598101 in words is "nine hundred ninety-seven trillion, one hundred ninety-seven billion, seven hundred twenty-six million, five hundred ninety-eight thousand, one hundred one".