61133455143 has 24 divisors (see below), whose sum is σ = 90849609968. Its totient is φ = 39597351552.

The previous prime is 61133455099. The next prime is 61133455157. The reversal of 61133455143 is 34155433116.

61133455143 is a `hidden beast` number, since 6 + 1 + 133 + 4 + 5 + 514 + 3 = 666.

It is not a de Polignac number, because 61133455143 - 2⁹ = 61133454631 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61133455098 and 61133455107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61133455193) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 650380 + ... + 738417.

Almost surely, 2^61133455143 is an apocalyptic number.

61133455143 is a deficient number, since it is larger than the sum of its proper divisors (29716154825).

61133455143 is a wasteful number, since it uses less digits than its factorization.

61133455143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1388943 (or 1388940 counting only the distinct ones).

The product of its digits is 64800, while the sum is 36.

Adding to 61133455143 its reverse (34155433116), we get a palindrome (95288888259).

The spelling of 61133455143 in words is "sixty-one billion, one hundred thirty-three million, four hundred fifty-five thousand, one hundred forty-three".