61383481445 has 16 divisors (see below), whose sum is σ = 86537832192. Its totient is φ = 41208490560.

The previous prime is 61383481421. The next prime is 61383481447. The reversal of 61383481445 is 54418438316.

It is not a de Polignac number, because 61383481445 - 2¹⁰ = 61383480421 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 61383481445.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61383481447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42924797 + ... + 42926226.

It is an arithmetic number, because the mean of its divisors is an integer number (5408614512).

Almost surely, 2^61383481445 is an apocalyptic number.

61383481445 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

61383481445 is a deficient number, since it is larger than the sum of its proper divisors (25154350747).

61383481445 is a wasteful number, since it uses less digits than its factorization.

61383481445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85851052.

The product of its digits is 1105920, while the sum is 47.

The spelling of 61383481445 in words is "sixty-one billion, three hundred eighty-three million, four hundred eighty-one thousand, four hundred forty-five".