42500416639 has 4 divisors (see below), whose sum is σ = 42653848024. Its totient is φ = 42346985256.

The previous prime is 42500416561. The next prime is 42500416643. The reversal of 42500416639 is 93661400524.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42500416639 - 2²³ = 42492028031 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 (42500416939) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76715277 + ... + 76715830.

It is an arithmetic number, because the mean of its divisors is an integer number (10663462006).

Almost surely, 2^42500416639 is an apocalyptic number.

42500416639 is a deficient number, since it is larger than the sum of its proper divisors (153431385).

42500416639 is a wasteful number, since it uses less digits than its factorization.

42500416639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153431384.

The product of its (nonzero) digits is 155520, while the sum is 40.

The spelling of 42500416639 in words is "forty-two billion, five hundred million, four hundred sixteen thousand, six hundred thirty-nine".