81042522703340 has 48 divisors (see below), whose sum is σ = 185664865478400. Its totient is φ = 29469402943680.

The previous prime is 81042522703253. The next prime is 81042522703367. The reversal of 81042522703340 is 4330722524018.

It is a super-2 number, since 2×81042522703340² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7021961 + ... + 14539359.

It is an arithmetic number, because the mean of its divisors is an integer number (3868018030800).

Almost surely, 2^{81042522703340} is an apocalyptic number.

It is an amenable number.

81042522703340 is an abundant number, since it is smaller than the sum of its proper divisors (104622342775060).

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

81042522703340 is a wasteful number, since it uses less digits than its factorization.

81042522703340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7566422 (or 7566420 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 41.

The spelling of 81042522703340 in words is "eighty-one trillion, forty-two billion, five hundred twenty-two million, seven hundred three thousand, three hundred forty".