81030426676 has 24 divisors (see below), whose sum is σ = 146781573120. Its totient is φ = 39094521312.

The previous prime is 81030426671. The next prime is 81030426689. The reversal of 81030426676 is 67662403018.

It is a super-2 number, since 2×81030426676² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81030426671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17116 + ... + 402931.

It is an arithmetic number, because the mean of its divisors is an integer number (6115898880).

Almost surely, 2^81030426676 is an apocalyptic number.

It is an amenable number.

81030426676 is a deficient number, since it is larger than the sum of its proper divisors (65751146444).

81030426676 is a wasteful number, since it uses less digits than its factorization.

81030426676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421743 (or 421741 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 43.

The spelling of 81030426676 in words is "eighty-one billion, thirty million, four hundred twenty-six thousand, six hundred seventy-six".