45178028444 has 24 divisors (see below), whose sum is σ = 80327656080. Its totient is φ = 22227993216.

The previous prime is 45178028431. The next prime is 45178028471. The reversal of 45178028444 is 44482087154.

It is a super-2 number, since 2×45178028444² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 161162 + ... + 341070.

It is an arithmetic number, because the mean of its divisors is an integer number (3346985670).

Almost surely, 2^45178028444 is an apocalyptic number.

It is an amenable number.

45178028444 is a deficient number, since it is larger than the sum of its proper divisors (35149627636).

45178028444 is a wasteful number, since it uses less digits than its factorization.

45178028444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180917 (or 180915 counting only the distinct ones).

The product of its (nonzero) digits is 1146880, while the sum is 47.

The spelling of 45178028444 in words is "forty-five billion, one hundred seventy-eight million, twenty-eight thousand, four hundred forty-four".