81037852851 has 16 divisors (see below), whose sum is σ = 113608755360. Its totient is φ = 51307173120.

The previous prime is 81037852813. The next prime is 81037852853. The reversal of 81037852851 is 15825873018.

It is not a de Polignac number, because 81037852851 - 2¹⁰ = 81037851827 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 81037852851.

It is not an unprimeable number, because it can be changed into a prime (81037852853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7629690 + ... + 7640303.

It is an arithmetic number, because the mean of its divisors is an integer number (7100547210).

Almost surely, 2^81037852851 is an apocalyptic number.

81037852851 is a deficient number, since it is larger than the sum of its proper divisors (32570902509).

81037852851 is a wasteful number, since it uses less digits than its factorization.

81037852851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15270086.

The product of its (nonzero) digits is 537600, while the sum is 48.

The spelling of 81037852851 in words is "eighty-one billion, thirty-seven million, eight hundred fifty-two thousand, eight hundred fifty-one".