61741305571 has 4 divisors (see below), whose sum is σ = 67354151544. Its totient is φ = 56128459600.

The previous prime is 61741305503. The next prime is 61741305607. The reversal of 61741305571 is 17550314716.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 61741305571 - 2¹⁷ = 61741174499 is a prime.

It is a super-2 number, since 2×61741305571² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61741308571) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2806422970 + ... + 2806422991.

It is an arithmetic number, because the mean of its divisors is an integer number (16838537886).

Almost surely, 2^61741305571 is an apocalyptic number.

61741305571 is a deficient number, since it is larger than the sum of its proper divisors (5612845973).

61741305571 is a wasteful number, since it uses less digits than its factorization.

61741305571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5612845972.

The product of its (nonzero) digits is 88200, while the sum is 40.

The spelling of 61741305571 in words is "sixty-one billion, seven hundred forty-one million, three hundred five thousand, five hundred seventy-one".