45538241778 has 12 divisors (see below), whose sum is σ = 98666190558. Its totient is φ = 15179413920.

The previous prime is 45538241729. The next prime is 45538241789. The reversal of 45538241778 is 87714283554.

45538241778 is a `hidden beast` number, since 4 + 5 + 538 + 24 + 17 + 78 = 666.

45538241778 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 42034430529 + 3503811249 = 205023^2 + 59193^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1264951143 + ... + 1264951178.

Almost surely, 2^45538241778 is an apocalyptic number.

45538241778 is an abundant number, since it is smaller than the sum of its proper divisors (53127948780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

45538241778 is a wasteful number, since it uses less digits than its factorization.

45538241778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2529902329 (or 2529902326 counting only the distinct ones).

The product of its digits is 7526400, while the sum is 54.

The spelling of 45538241778 in words is "forty-five billion, five hundred thirty-eight million, two hundred forty-one thousand, seven hundred seventy-eight".