83678487638 has 8 divisors (see below), whose sum is σ = 128188321632. Its totient is φ = 40949047096.

The previous prime is 83678487593. The next prime is 83678487667.

83678487638 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 445098245 + ... + 445098432.

It is an arithmetic number, because the mean of its divisors is an integer number (16023540204).

Almost surely, 2^83678487638 is an apocalyptic number.

83678487638 is a deficient number, since it is larger than the sum of its proper divisors (44509833994).

83678487638 is a wasteful number, since it uses less digits than its factorization.

83678487638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 890196726.

The product of its digits is 260112384, while the sum is 68.

The spelling of 83678487638 in words is "eighty-three billion, six hundred seventy-eight million, four hundred eighty-seven thousand, six hundred thirty-eight".