42500416638 has 16 divisors (see below), whose sum is σ = 85038322320. Its totient is φ = 14160557376.

The previous prime is 42500416561. The next prime is 42500416643. The reversal of 42500416638 is 83661400524.

It is a junction number, because it is equal to n+sod(n) for n = 42500416596 and 42500416605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1547295 + ... + 1574522.

It is an arithmetic number, because the mean of its divisors is an integer number (5314895145).

Almost surely, 2^42500416638 is an apocalyptic number.

42500416638 is an abundant number, since it is smaller than the sum of its proper divisors (42537905682).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42500416638 is a wasteful number, since it uses less digits than its factorization.

42500416638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3124091.

The product of its (nonzero) digits is 138240, while the sum is 39.

The spelling of 42500416638 in words is "forty-two billion, five hundred million, four hundred sixteen thousand, six hundred thirty-eight".