83685258638 has 16 divisors (see below), whose sum is σ = 132779951136. Its totient is φ = 39475117440.

The previous prime is 83685258623. The next prime is 83685258653.

83685258638 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (83685258623) and next prime (83685258653).

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, 12457223 + ... + 12463938.

It is an arithmetic number, because the mean of its divisors is an integer number (8298746946).

Almost surely, 2^83685258638 is an apocalyptic number.

83685258638 is a deficient number, since it is larger than the sum of its proper divisors (49094692498).

83685258638 is a wasteful number, since it uses less digits than its factorization.

83685258638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24921259.

The product of its digits is 66355200, while the sum is 62.

The spelling of 83685258638 in words is "eighty-three billion, six hundred eighty-five million, two hundred fifty-eight thousand, six hundred thirty-eight".