45445447042 has 8 divisors (see below), whose sum is σ = 68177519100. Its totient is φ = 22719607344.

The previous prime is 45445447039. The next prime is 45445447043. The reversal of 45445447042 is 24074454454.

It can be written as a sum of positive squares in 2 ways, for example, as 40764013801 + 4681433241 = 201901^2 + 68421^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 45445447042.

It is not an unprimeable number, because it can be changed into a prime (45445447043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1539817 + ... + 1569052.

Almost surely, 2^45445447042 is an apocalyptic number.

45445447042 is a deficient number, since it is larger than the sum of its proper divisors (22732072058).

45445447042 is a wasteful number, since it uses less digits than its factorization.

45445447042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3116180.

The product of its (nonzero) digits is 1433600, while the sum is 43.

The spelling of 45445447042 in words is "forty-five billion, four hundred forty-five million, four hundred forty-seven thousand, forty-two".