81050862235480 has 128 divisors (see below), whose sum is σ = 191851346534400. Its totient is φ = 30776127782400.

The previous prime is 81050862235451. The next prime is 81050862235487. The reversal of 81050862235480 is 8453226805018.

It is a super-2 number, since 2×81050862235480² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81050862235487) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32676690 + ... + 35069470.

It is an arithmetic number, because the mean of its divisors is an integer number (1498838644800).

Almost surely, 2^{81050862235480} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 81050862235480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95925673267200).

81050862235480 is an abundant number, since it is smaller than the sum of its proper divisors (110800484298920).

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

81050862235480 is a wasteful number, since it uses less digits than its factorization.

81050862235480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2393345 (or 2393341 counting only the distinct ones).

The product of its (nonzero) digits is 3686400, while the sum is 52.

The spelling of 81050862235480 in words is "eighty-one trillion, fifty billion, eight hundred sixty-two million, two hundred thirty-five thousand, four hundred eighty".