81489425000862 has 64 divisors (see below), whose sum is σ = 172977895609344. Its totient is φ = 25504279756800.

The previous prime is 81489425000773. The next prime is 81489425000887. The reversal of 81489425000862 is 26800052498418.

It is a super-2 number, since 2×81489425000862² (a number of 29 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 31 ways as a sum of consecutive naturals, for example, 359160478 + ... + 359387294.

It is an arithmetic number, because the mean of its divisors is an integer number (2702779618896).

Almost surely, 2^{81489425000862} is an apocalyptic number.

81489425000862 is an abundant number, since it is smaller than the sum of its proper divisors (91488470608482).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

81489425000862 is a wasteful number, since it uses less digits than its factorization.

81489425000862 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235233.

The product of its (nonzero) digits is 8847360, while the sum is 57.

The spelling of 81489425000862 in words is "eighty-one trillion, four hundred eighty-nine billion, four hundred twenty-five million, eight hundred sixty-two", and thus it is an aban number.