61071042743 has 12 divisors (see below), whose sum is σ = 64897970280. Its totient is φ = 57458078592.

The previous prime is 61071042731. The next prime is 61071042757. The reversal of 61071042743 is 34724017016.

61071042743 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 61071042743 - 2⁴ = 61071042727 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61071042793) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 804380 + ... + 877022.

It is an arithmetic number, because the mean of its divisors is an integer number (5408164190).

Almost surely, 2^61071042743 is an apocalyptic number.

61071042743 is a deficient number, since it is larger than the sum of its proper divisors (3826927537).

61071042743 is a wasteful number, since it uses less digits than its factorization.

61071042743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75586 (or 75569 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 35.

Adding to 61071042743 its reverse (34724017016), we get a palindrome (95795059759).

The spelling of 61071042743 in words is "sixty-one billion, seventy-one million, forty-two thousand, seven hundred forty-three".