81738202335 has 8 divisors (see below), whose sum is σ = 130781123760. Its totient is φ = 43593707904.

The previous prime is 81738202327. The next prime is 81738202421. The reversal of 81738202335 is 53320283718.

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

It is not a de Polignac number, because 81738202335 - 2³ = 81738202327 is a prime.

It is a super-2 number, since 2×81738202335² (a number of 23 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 7 ways as a sum of consecutive naturals, for example, 2724606730 + ... + 2724606759.

It is an arithmetic number, because the mean of its divisors is an integer number (16347640470).

Almost surely, 2^81738202335 is an apocalyptic number.

81738202335 is a deficient number, since it is larger than the sum of its proper divisors (49042921425).

81738202335 is a wasteful number, since it uses less digits than its factorization.

81738202335 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5449213497.

The product of its (nonzero) digits is 241920, while the sum is 42.

The spelling of 81738202335 in words is "eighty-one billion, seven hundred thirty-eight million, two hundred two thousand, three hundred thirty-five".