81858300753 has 8 divisors (see below), whose sum is σ = 109145793600. Its totient is φ = 54571504208.

The previous prime is 81858300751. The next prime is 81858300763. The reversal of 81858300753 is 35700385818.

It is a happy number.

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 81858300753 - 2¹ = 81858300751 is a prime.

It is a super-3 number, since 3×81858300753³ (a number of 34 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (81858300751) 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, 242983 + ... + 471971.

It is an arithmetic number, because the mean of its divisors is an integer number (13643224200).

Almost surely, 2^81858300753 is an apocalyptic number.

It is an amenable number.

81858300753 is a deficient number, since it is larger than the sum of its proper divisors (27287492847).

81858300753 is a wasteful number, since it uses less digits than its factorization.

81858300753 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348151.

The product of its (nonzero) digits is 806400, while the sum is 48.

The spelling of 81858300753 in words is "eighty-one billion, eight hundred fifty-eight million, three hundred thousand, seven hundred fifty-three".