42938535645 has 32 divisors (see below), whose sum is σ = 76440349440. Its totient is φ = 22869000000.

The previous prime is 42938535623. The next prime is 42938535683. The reversal of 42938535645 is 54653583924.

It is a happy number.

42938535645 is a `hidden beast` number, since 4 + 29 + 3 + 8 + 53 + 564 + 5 = 666.

It is not a de Polignac number, because 42938535645 - 2⁷ = 42938535517 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42938535591 and 42938535600.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 120606 + ... + 316895.

It is an arithmetic number, because the mean of its divisors is an integer number (2388760920).

Almost surely, 2^42938535645 is an apocalyptic number.

42938535645 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

42938535645 is a deficient number, since it is larger than the sum of its proper divisors (33501813795).

42938535645 is a wasteful number, since it uses less digits than its factorization.

42938535645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438242 (or 438236 counting only the distinct ones).

The product of its digits is 15552000, while the sum is 54.

The spelling of 42938535645 in words is "forty-two billion, nine hundred thirty-eight million, five hundred thirty-five thousand, six hundred forty-five".