83621688612638 has 32 divisors (see below), whose sum is σ = 137789364837600. Its totient is φ = 37745024896000.

The previous prime is 83621688612617. The next prime is 83621688612703.

83621688612638 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×83621688612638² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9435398 + ... + 16008438.

It is an arithmetic number, because the mean of its divisors is an integer number (4305917651175).

Almost surely, 2^{83621688612638} is an apocalyptic number.

83621688612638 is a deficient number, since it is larger than the sum of its proper divisors (54167676224962).

83621688612638 is a wasteful number, since it uses less digits than its factorization.

83621688612638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6577084.

The product of its digits is 191102976, while the sum is 68.

The spelling of 83621688612638 in words is "eighty-three trillion, six hundred twenty-one billion, six hundred eighty-eight million, six hundred twelve thousand, six hundred thirty-eight".