42145545644 has 24 divisors (see below), whose sum is σ = 76975411968. Its totient is φ = 20152903760.

The previous prime is 42145545643. The next prime is 42145545671. The reversal of 42145545644 is 44654554124.

42145545644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 42145545595 and 42145545604.

It is not an unprimeable number, because it can be changed into a prime (42145545643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 506639 + ... + 583929.

It is an arithmetic number, because the mean of its divisors is an integer number (3207308832).

Almost surely, 2^42145545644 is an apocalyptic number.

It is an amenable number.

42145545644 is a deficient number, since it is larger than the sum of its proper divisors (34829866324).

42145545644 is a wasteful number, since it uses less digits than its factorization.

42145545644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83245 (or 83243 counting only the distinct ones).

The product of its digits is 1536000, while the sum is 44.

The spelling of 42145545644 in words is "forty-two billion, one hundred forty-five million, five hundred forty-five thousand, six hundred forty-four".