81629114605 has 8 divisors (see below), whose sum is σ = 98009763552. Its totient is φ = 65266741008.

The previous prime is 81629114603. The next prime is 81629114617. The reversal of 81629114605 is 50641192618.

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

It is a cyclic number.

It is not a de Polignac number, because 81629114605 - 2¹ = 81629114603 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81629114603) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4559007 + ... + 4576876.

It is an arithmetic number, because the mean of its divisors is an integer number (12251220444).

Almost surely, 2^81629114605 is an apocalyptic number.

It is an amenable number.

81629114605 is a deficient number, since it is larger than the sum of its proper divisors (16380648947).

81629114605 is a wasteful number, since it uses less digits than its factorization.

81629114605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9137675.

The product of its (nonzero) digits is 103680, while the sum is 43.

The spelling of 81629114605 in words is "eighty-one billion, six hundred twenty-nine million, one hundred fourteen thousand, six hundred five".