81427300263330 has 128 divisors (see below), whose sum is σ = 223833904865280. Its totient is φ = 18571094208000.

The previous prime is 81427300263329. The next prime is 81427300263437. The reversal of 81427300263330 is 3336200372418.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 769937955 + ... + 770043705.

It is an arithmetic number, because the mean of its divisors is an integer number (1748702381760).

Almost surely, 2^{81427300263330} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 81427300263330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111916952432640).

81427300263330 is an abundant number, since it is smaller than the sum of its proper divisors (142406604601950).

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

81427300263330 is a wasteful number, since it uses less digits than its factorization.

81427300263330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113784.

The product of its (nonzero) digits is 435456, while the sum is 42.

The spelling of 81427300263330 in words is "eighty-one trillion, four hundred twenty-seven billion, three hundred million, two hundred sixty-three thousand, three hundred thirty".