42640575837850 has 12 divisors (see below), whose sum is σ = 79311471058494. Its totient is φ = 17056230335120.

The previous prime is 42640575837841. The next prime is 42640575837859. The reversal of 42640575837850 is 5873857504624.

It is an interprime number because it is at equal distance from previous prime (42640575837841) and next prime (42640575837859).

It can be written as a sum of positive squares in 3 ways, for example, as 31229644545801 + 11410931292049 = 5588349^2 + 3378007^2 .

It is not an unprimeable number, because it can be changed into a prime (42640575837859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 426405758329 + ... + 426405758428.

Almost surely, 2^{42640575837850} is an apocalyptic number.

42640575837850 is a deficient number, since it is larger than the sum of its proper divisors (36670895220644).

42640575837850 is a wasteful number, since it uses less digits than its factorization.

42640575837850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 852811516769 (or 852811516764 counting only the distinct ones).

The product of its (nonzero) digits is 225792000, while the sum is 64.

The spelling of 42640575837850 in words is "forty-two trillion, six hundred forty billion, five hundred seventy-five million, eight hundred thirty-seven thousand, eight hundred fifty".