45555731073 has 10 divisors (see below), whose sum is σ = 68052388514. Its totient is φ = 30370487328.

The previous prime is 45555731059. The next prime is 45555731077. The reversal of 45555731073 is 37013755554.

45555731073 is a `hidden beast` number, since 4 + 5 + 5 + 5 + 573 + 1 + 0 + 73 = 666.

It can be written as a sum of positive squares in only one way, i.e., 45485372529 + 70358544 = 213273^2 + 8388^2 .

It is not a de Polignac number, because 45555731073 - 2¹⁸ = 45555468929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45555731077) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 281208136 + ... + 281208297.

Almost surely, 2^45555731073 is an apocalyptic number.

It is an amenable number.

45555731073 is a deficient number, since it is larger than the sum of its proper divisors (22496657441).

45555731073 is an equidigital number, since it uses as much as digits as its factorization.

45555731073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 562416445 (or 562416436 counting only the distinct ones).

The product of its (nonzero) digits is 1102500, while the sum is 45.

The spelling of 45555731073 in words is "forty-five billion, five hundred fifty-five million, seven hundred thirty-one thousand, seventy-three".