45442545502 has 4 divisors (see below), whose sum is σ = 68163818256. Its totient is φ = 22721272750.

The previous prime is 45442545497. The next prime is 45442545503. The reversal of 45442545502 is 20554524454.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20554524454 = 2 ⋅10277262227.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45442545503) 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 as a sum of consecutive naturals, namely, 11360636374 + ... + 11360636377.

It is an arithmetic number, because the mean of its divisors is an integer number (17040954564).

Almost surely, 2^45442545502 is an apocalyptic number.

45442545502 is a deficient number, since it is larger than the sum of its proper divisors (22721272754).

45442545502 is a wasteful number, since it uses less digits than its factorization.

45442545502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22721272753.

The product of its (nonzero) digits is 640000, while the sum is 40.

The spelling of 45442545502 in words is "forty-five billion, four hundred forty-two million, five hundred forty-five thousand, five hundred two".