42644212256040 has 64 divisors (see below), whose sum is σ = 127946712490560. Its totient is φ = 11370538759680.

The previous prime is 42644212256003. The next prime is 42644212256071. The reversal of 42644212256040 is 4065221244624.

It is a junction number, because it is equal to n+sod(n) for n = 42644212255983 and 42644212256001.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18454149 + ... + 20635988.

It is an arithmetic number, because the mean of its divisors is an integer number (1999167382665).

Almost surely, 2^{42644212256040} is an apocalyptic number.

42644212256040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42644212256040 is an abundant number, since it is smaller than the sum of its proper divisors (85302500234520).

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

42644212256040 is a wasteful number, since it uses less digits than its factorization.

42644212256040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39099242 (or 39099238 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 42.

The spelling of 42644212256040 in words is "forty-two trillion, six hundred forty-four billion, two hundred twelve million, two hundred fifty-six thousand, forty".