81087848033854 has 64 divisors (see below), whose sum is σ = 130185176140800. Its totient is φ = 37767488371200.

The previous prime is 81087848033837. The next prime is 81087848033891. The reversal of 81087848033854 is 45833084878018.

It is a super-2 number, since 2×81087848033854² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 81087848033854.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3246488214 + ... + 3246513190.

It is an arithmetic number, because the mean of its divisors is an integer number (2034143377200).

Almost surely, 2^{81087848033854} is an apocalyptic number.

81087848033854 is a deficient number, since it is larger than the sum of its proper divisors (49097328106946).

81087848033854 is a wasteful number, since it uses less digits than its factorization.

81087848033854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28249.

The product of its (nonzero) digits is 165150720, while the sum is 67.

The spelling of 81087848033854 in words is "eighty-one trillion, eighty-seven billion, eight hundred forty-eight million, thirty-three thousand, eight hundred fifty-four".