61143833533 has 16 divisors (see below), whose sum is σ = 63183214080. Its totient is φ = 59132361600.

The previous prime is 61143833473. The next prime is 61143833603. The reversal of 61143833533 is 33533834116.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 61143833533 - 2¹³ = 61143825341 is a prime.

It is a super-2 number, since 2×61143833533² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61143830533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2763328 + ... + 2785366.

It is an arithmetic number, because the mean of its divisors is an integer number (3948950880).

Almost surely, 2^61143833533 is an apocalyptic number.

It is an amenable number.

61143833533 is a deficient number, since it is larger than the sum of its proper divisors (2039380547).

61143833533 is a wasteful number, since it uses less digits than its factorization.

61143833533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22668.

The product of its digits is 233280, while the sum is 40.

The spelling of 61143833533 in words is "sixty-one billion, one hundred forty-three million, eight hundred thirty-three thousand, five hundred thirty-three".