81053628002312 has 16 divisors (see below), whose sum is σ = 173686345719360. Its totient is φ = 34737269143824.

The previous prime is 81053628002299. The next prime is 81053628002327. The reversal of 81053628002312 is 21320082635018.

It is a super-2 number, since 2×81053628002312² (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 81053628002312.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 723693107108 + ... + 723693107219.

It is an arithmetic number, because the mean of its divisors is an integer number (10855396607460).

Almost surely, 2^{81053628002312} is an apocalyptic number.

It is an amenable number.

81053628002312 is an abundant number, since it is smaller than the sum of its proper divisors (92632717717048).

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

81053628002312 is a wasteful number, since it uses less digits than its factorization.

81053628002312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1447386214340 (or 1447386214336 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 41.

The spelling of 81053628002312 in words is "eighty-one trillion, fifty-three billion, six hundred twenty-eight million, two thousand, three hundred twelve".