997529536033 has 4 divisors (see below), whose sum is σ = 997531842580. Its totient is φ = 997527229488.

The previous prime is 997529536027. The next prime is 997529536043. The reversal of 997529536033 is 330635925799.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 601847020944 + 395682515089 = 775788^2 + 629033^2 .

It is a 3-Lehmer number, since φ(997529536033) divides (997529536033-1)³.

It is a cyclic number.

It is not a de Polignac number, because 997529536033 - 2²¹ = 997527438881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (997529536043) 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, 288318 + ... + 1441591.

It is an arithmetic number, because the mean of its divisors is an integer number (249382960645).

Almost surely, 2^997529536033 is an apocalyptic number.

997529536033 is the 576637-th octagonal number.

It is an amenable number.

997529536033 is a deficient number, since it is larger than the sum of its proper divisors (2306547).

997529536033 is a wasteful number, since it uses less digits than its factorization.

997529536033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2306546.

The product of its (nonzero) digits is 41334300, while the sum is 61.

The spelling of 997529536033 in words is "nine hundred ninety-seven billion, five hundred twenty-nine million, five hundred thirty-six thousand, thirty-three".