61305125445 has 24 divisors (see below), whose sum is σ = 106390773216. Its totient is φ = 32656511328.

The previous prime is 61305125429. The next prime is 61305125459. The reversal of 61305125445 is 54452150316.

61305125445 is a `hidden beast` number, since 6 + 130 + 512 + 5 + 4 + 4 + 5 = 666.

It is not a de Polignac number, because 61305125445 - 2⁴ = 61305125429 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 786447 + ... + 860876.

It is an arithmetic number, because the mean of its divisors is an integer number (4432948884).

Almost surely, 2^61305125445 is an apocalyptic number.

It is an amenable number.

61305125445 is a deficient number, since it is larger than the sum of its proper divisors (45085647771).

61305125445 is a wasteful number, since it uses less digits than its factorization.

61305125445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1648161 (or 1648158 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The spelling of 61305125445 in words is "sixty-one billion, three hundred five million, one hundred twenty-five thousand, four hundred forty-five".