81363030401830 has 32 divisors (see below), whose sum is σ = 151606025526528. Its totient is φ = 31406144563200.

The previous prime is 81363030401777. The next prime is 81363030401833. The reversal of 81363030401830 is 3810403036318.

It is a super-2 number, since 2×81363030401830² (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 (81363030401833) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 371648911 + ... + 371867770.

It is an arithmetic number, because the mean of its divisors is an integer number (4737688297704).

Almost surely, 2^{81363030401830} is an apocalyptic number.

81363030401830 is a deficient number, since it is larger than the sum of its proper divisors (70242995124698).

81363030401830 is a wasteful number, since it uses less digits than its factorization.

81363030401830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 743517072.

The product of its (nonzero) digits is 124416, while the sum is 40.

The spelling of 81363030401830 in words is "eighty-one trillion, three hundred sixty-three billion, thirty million, four hundred one thousand, eight hundred thirty".