61241543833 has 4 divisors (see below), whose sum is σ = 61242105268. Its totient is φ = 61240982400.

The previous prime is 61241543827. The next prime is 61241543849. The reversal of 61241543833 is 33834514216.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 26782304409 + 34459239424 = 163653^2 + 185632^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61241543833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61241541833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58416 + ... + 354817.

It is an arithmetic number, because the mean of its divisors is an integer number (15310526317).

Almost surely, 2^61241543833 is an apocalyptic number.

It is an amenable number.

61241543833 is a deficient number, since it is larger than the sum of its proper divisors (561435).

61241543833 is a wasteful number, since it uses less digits than its factorization.

61241543833 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561434.

The product of its digits is 207360, while the sum is 40.

The spelling of 61241543833 in words is "sixty-one billion, two hundred forty-one million, five hundred forty-three thousand, eight hundred thirty-three".