73447465545 has 24 divisors (see below), whose sum is σ = 129052904136. Its totient is φ = 38635377408.

The previous prime is 73447465453. The next prime is 73447465571. The reversal of 73447465545 is 54556474437.

73447465545 is a `hidden beast` number, since 7 + 3 + 4 + 47 + 46 + 554 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 4616794809 + 68830670736 = 67947^2 + 262356^2 .

It is not a de Polignac number, because 73447465545 - 2⁷ = 73447465417 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 73447465491 and 73447465500.

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, 11175934 + ... + 11182503.

It is an arithmetic number, because the mean of its divisors is an integer number (5377204339).

Almost surely, 2^73447465545 is an apocalyptic number.

It is an amenable number.

73447465545 is a deficient number, since it is larger than the sum of its proper divisors (55605438591).

73447465545 is a wasteful number, since it uses less digits than its factorization.

73447465545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22358521 (or 22358518 counting only the distinct ones).

The product of its digits is 28224000, while the sum is 54.

The spelling of 73447465545 in words is "seventy-three billion, four hundred forty-seven million, four hundred sixty-five thousand, five hundred forty-five".