61710378271 has 8 divisors (see below), whose sum is σ = 61921354320. Its totient is φ = 61499505408.

The previous prime is 61710378269. The next prime is 61710378287. The reversal of 61710378271 is 17287301716.

It is a happy number.

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 61710378271 - 2¹ = 61710378269 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 (61710378211) 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, 1285320 + ... + 1332466.

It is an arithmetic number, because the mean of its divisors is an integer number (7740169290).

Almost surely, 2^61710378271 is an apocalyptic number.

61710378271 is a deficient number, since it is larger than the sum of its proper divisors (210976049).

61710378271 is a wasteful number, since it uses less digits than its factorization.

61710378271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51593.

The product of its (nonzero) digits is 98784, while the sum is 43.

Adding to 61710378271 its reverse (17287301716), we get a palindrome (78997679987).

The spelling of 61710378271 in words is "sixty-one billion, seven hundred ten million, three hundred seventy-eight thousand, two hundred seventy-one".