81759854030 has 8 divisors (see below), whose sum is σ = 147167737272. Its totient is φ = 32703941608.

The previous prime is 81759854027. The next prime is 81759854041. The reversal of 81759854030 is 3045895718.

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

It is a self number, because there is not a number n which added to its sum of digits gives 81759854030.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4087992692 + ... + 4087992711.

It is an arithmetic number, because the mean of its divisors is an integer number (18395967159).

Almost surely, 2^81759854030 is an apocalyptic number.

81759854030 is a deficient number, since it is larger than the sum of its proper divisors (65407883242).

81759854030 is a wasteful number, since it uses less digits than its factorization.

81759854030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8175985410.

The product of its (nonzero) digits is 1209600, while the sum is 50.

The spelling of 81759854030 in words is "eighty-one billion, seven hundred fifty-nine million, eight hundred fifty-four thousand, thirty".