81600654238 has 8 divisors (see below), whose sum is σ = 122430609288. Its totient is φ = 40790451144.

The previous prime is 81600654229. The next prime is 81600654253. The reversal of 81600654238 is 83245600618.

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

It is a junction number, because it is equal to n+sod(n) for n = 81600654194 and 81600654203.

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, 4927656 + ... + 4944187.

It is an arithmetic number, because the mean of its divisors is an integer number (15303826161).

Almost surely, 2^81600654238 is an apocalyptic number.

81600654238 is a deficient number, since it is larger than the sum of its proper divisors (40829955050).

81600654238 is a wasteful number, since it uses less digits than its factorization.

81600654238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9875978.

The product of its (nonzero) digits is 276480, while the sum is 43.

The spelling of 81600654238 in words is "eighty-one billion, six hundred million, six hundred fifty-four thousand, two hundred thirty-eight".