42394475672647 has 16 divisors (see below), whose sum is σ = 48483780321600. Its totient is φ = 36313410405888.

The previous prime is 42394475672621. The next prime is 42394475672669. The reversal of 42394475672647 is 74627657449324.

It is not a de Polignac number, because 42394475672647 - 2¹⁹ = 42394475148359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42394473672647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 457495743 + ... + 457588399.

It is an arithmetic number, because the mean of its divisors is an integer number (3030236270100).

Almost surely, 2^{42394475672647} is an apocalyptic number.

42394475672647 is a deficient number, since it is larger than the sum of its proper divisors (6089304648953).

42394475672647 is a wasteful number, since it uses less digits than its factorization.

42394475672647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136410.

The product of its digits is 1706987520, while the sum is 70.

The spelling of 42394475672647 in words is "forty-two trillion, three hundred ninety-four billion, four hundred seventy-five million, six hundred seventy-two thousand, six hundred forty-seven".