61281361571 has 8 divisors (see below), whose sum is σ = 63671350800. Its totient is φ = 58909828320.

The previous prime is 61281361567. The next prime is 61281361573. The reversal of 61281361571 is 17516318216.

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 61281361571 - 2² = 61281361567 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61281361573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4607225 + ... + 4620506.

It is an arithmetic number, because the mean of its divisors is an integer number (7958918850).

Almost surely, 2^61281361571 is an apocalyptic number.

61281361571 is a deficient number, since it is larger than the sum of its proper divisors (2389989229).

61281361571 is a wasteful number, since it uses less digits than its factorization.

61281361571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9227989.

The product of its digits is 60480, while the sum is 41.

Adding to 61281361571 its reverse (17516318216), we get a palindrome (78797679787).

The spelling of 61281361571 in words is "sixty-one billion, two hundred eighty-one million, three hundred sixty-one thousand, five hundred seventy-one".