81075586030 has 16 divisors (see below), whose sum is σ = 146022285024. Its totient is φ = 32411072160.

The previous prime is 81075586019. The next prime is 81075586037. The reversal of 81075586030 is 3068557018.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81075586037) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2377506 + ... + 2411365.

It is an arithmetic number, because the mean of its divisors is an integer number (9126392814).

Almost surely, 2^81075586030 is an apocalyptic number.

81075586030 is a deficient number, since it is larger than the sum of its proper divisors (64946698994).

81075586030 is a wasteful number, since it uses less digits than its factorization.

81075586030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4790571.

The product of its (nonzero) digits is 201600, while the sum is 43.

The spelling of 81075586030 in words is "eighty-one billion, seventy-five million, five hundred eighty-six thousand, thirty".