42640591740635 has 8 divisors (see below), whose sum is σ = 58478525815776. Its totient is φ = 29239262907840.

The previous prime is 42640591740629. The next prime is 42640591740689. The reversal of 42640591740635 is 53604719504624.

42640591740635 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42640591740635 - 2⁸ = 42640591740379 is a prime.

It is a super-2 number, since 2×42640591740635² (a number of 28 digits) contains 22 as substring.

It is a Duffinian 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 7 ways as a sum of consecutive naturals, for example, 609151310546 + ... + 609151310615.

It is an arithmetic number, because the mean of its divisors is an integer number (7309815726972).

Almost surely, 2^{42640591740635} is an apocalyptic number.

42640591740635 is a deficient number, since it is larger than the sum of its proper divisors (15837934075141).

42640591740635 is a wasteful number, since it uses less digits than its factorization.

42640591740635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1218302621173.

The product of its (nonzero) digits is 21772800, while the sum is 56.

The spelling of 42640591740635 in words is "forty-two trillion, six hundred forty billion, five hundred ninety-one million, seven hundred forty thousand, six hundred thirty-five".