61543744433 has 8 divisors (see below), whose sum is σ = 61733404800. Its totient is φ = 61354313488.

The previous prime is 61543744331. The next prime is 61543744439. The reversal of 61543744433 is 33444734516.

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 61543744433 - 2¹⁰ = 61543743409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61543744439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 487928 + ... + 600966.

It is an arithmetic number, because the mean of its divisors is an integer number (7716675600).

Almost surely, 2^61543744433 is an apocalyptic number.

It is an amenable number.

61543744433 is a deficient number, since it is larger than the sum of its proper divisors (189660367).

61543744433 is a wasteful number, since it uses less digits than its factorization.

61543744433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114711.

The product of its digits is 1451520, while the sum is 44.

The spelling of 61543744433 in words is "sixty-one billion, five hundred forty-three million, seven hundred forty-four thousand, four hundred thirty-three".