61305134423 has 8 divisors (see below), whose sum is σ = 66120803616. Its totient is φ = 56503735200.

The previous prime is 61305134419. The next prime is 61305134483. The reversal of 61305134423 is 32443150316.

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 61305134423 - 2² = 61305134419 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61305134423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61305134413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3558563 + ... + 3575748.

It is an arithmetic number, because the mean of its divisors is an integer number (8265100452).

Almost surely, 2^61305134423 is an apocalyptic number.

61305134423 is a deficient number, since it is larger than the sum of its proper divisors (4815669193).

61305134423 is a wasteful number, since it uses less digits than its factorization.

61305134423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7134985.

The product of its (nonzero) digits is 25920, while the sum is 32.

Adding to 61305134423 its reverse (32443150316), we get a palindrome (93748284739).

The spelling of 61305134423 in words is "sixty-one billion, three hundred five million, one hundred thirty-four thousand, four hundred twenty-three".