41997329557 has 8 divisors (see below), whose sum is σ = 43191264056. Its totient is φ = 40806493632.

The previous prime is 41997329531. The next prime is 41997329603. The reversal of 41997329557 is 75592379914.

41997329557 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 14757147441 + 27240182116 = 121479^2 + 165046^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 41997329557 - 2²³ = 41988940949 is a prime.

It is the 204933-rd Hogben number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 41997329495 and 41997329504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (41997329657) by changing a digit.

It is a nontrivial repunit in base 204932.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 747138 + ... + 801379.

It is an arithmetic number, because the mean of its divisors is an integer number (5398908007).

Almost surely, 2^41997329557 is an apocalyptic number.

It is an amenable number.

41997329557 is a deficient number, since it is larger than the sum of its proper divisors (1193934499).

41997329557 is a wasteful number, since it uses less digits than its factorization.

41997329557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1549287.

The product of its digits is 21432600, while the sum is 61.

The spelling of 41997329557 in words is "forty-one billion, nine hundred ninety-seven million, three hundred twenty-nine thousand, five hundred fifty-seven".