61281545423 has 8 divisors (see below), whose sum is σ = 70098760992. Its totient is φ = 52480007136.

The previous prime is 61281545389. The next prime is 61281545497. The reversal of 61281545423 is 32454518216.

61281545423 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 61281545423 - 2⁶ = 61281545359 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 (61281545723) 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, 3910940 + ... + 3926577.

It is an arithmetic number, because the mean of its divisors is an integer number (8762345124).

Almost surely, 2^61281545423 is an apocalyptic number.

61281545423 is a deficient number, since it is larger than the sum of its proper divisors (8817215569).

61281545423 is a wasteful number, since it uses less digits than its factorization.

61281545423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7838641.

The product of its digits is 230400, while the sum is 41.

It can be divided in two parts, 6128 and 1545423, that added together give a palindrome (1551551).

The spelling of 61281545423 in words is "sixty-one billion, two hundred eighty-one million, five hundred forty-five thousand, four hundred twenty-three".