43445920061493 has 12 divisors (see below), whose sum is σ = 63080374438380. Its totient is φ = 28813874443776.

The previous prime is 43445920061491. The next prime is 43445920061501. The reversal of 43445920061493 is 39416002954434.

It is a happy number.

43445920061493 is a `hidden beast` number, since 4 + 3 + 4 + 4 + 5 + 92 + 0 + 0 + 61 + 493 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 31280731754724 + 12165188306769 = 5592918^2 + 3487863^2 .

It is not a de Polignac number, because 43445920061493 - 2¹ = 43445920061491 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43445920061491) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12506020158 + ... + 12506023631.

It is an arithmetic number, because the mean of its divisors is an integer number (5256697869865).

Almost surely, 2^{43445920061493} is an apocalyptic number.

It is an amenable number.

43445920061493 is a deficient number, since it is larger than the sum of its proper divisors (19634454376887).

43445920061493 is a wasteful number, since it uses less digits than its factorization.

43445920061493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25012043988 (or 25012043985 counting only the distinct ones).

The product of its (nonzero) digits is 11197440, while the sum is 54.

The spelling of 43445920061493 in words is "forty-three trillion, four hundred forty-five billion, nine hundred twenty million, sixty-one thousand, four hundred ninety-three".