61725327123 has 4 divisors (see below), whose sum is σ = 82300436168. Its totient is φ = 41150218080.

The previous prime is 61725327119. The next prime is 61725327137. The reversal of 61725327123 is 32172352716.

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

It is not a de Polignac number, because 61725327123 - 2² = 61725327119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61725327143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10287554518 + ... + 10287554523.

It is an arithmetic number, because the mean of its divisors is an integer number (20575109042).

Almost surely, 2^61725327123 is an apocalyptic number.

61725327123 is a deficient number, since it is larger than the sum of its proper divisors (20575109045).

61725327123 is a wasteful number, since it uses less digits than its factorization.

61725327123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20575109044.

The product of its digits is 105840, while the sum is 39.

Adding to 61725327123 its reverse (32172352716), we get a palindrome (93897679839).

The spelling of 61725327123 in words is "sixty-one billion, seven hundred twenty-five million, three hundred twenty-seven thousand, one hundred twenty-three".