42417521751 has 24 divisors (see below), whose sum is σ = 62525055600. Its totient is φ = 25558952320.

The previous prime is 42417521689. The next prime is 42417521767. The reversal of 42417521751 is 15712571424.

It is not a de Polignac number, because 42417521751 - 2⁶ = 42417521687 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42417521051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 274926 + ... + 400523.

It is an arithmetic number, because the mean of its divisors is an integer number (2605210650).

Almost surely, 2^42417521751 is an apocalyptic number.

42417521751 is a deficient number, since it is larger than the sum of its proper divisors (20107533849).

42417521751 is a wasteful number, since it uses less digits than its factorization.

42417521751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 675647 (or 675636 counting only the distinct ones).

The product of its digits is 78400, while the sum is 39.

The spelling of 42417521751 in words is "forty-two billion, four hundred seventeen million, five hundred twenty-one thousand, seven hundred fifty-one".