42703635641 has 4 divisors (see below), whose sum is σ = 42756291984. Its totient is φ = 42650979300.

The previous prime is 42703635629. The next prime is 42703635677. The reversal of 42703635641 is 14653630724.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42703635641 - 2¹⁸ = 42703373497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42703635841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26326955 + ... + 26328576.

It is an arithmetic number, because the mean of its divisors is an integer number (10689072996).

Almost surely, 2^42703635641 is an apocalyptic number.

It is an amenable number.

42703635641 is a deficient number, since it is larger than the sum of its proper divisors (52656343).

42703635641 is an equidigital number, since it uses as much as digits as its factorization.

42703635641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52656342.

The product of its (nonzero) digits is 362880, while the sum is 41.

The spelling of 42703635641 in words is "forty-two billion, seven hundred three million, six hundred thirty-five thousand, six hundred forty-one".