81075035810 has 32 divisors (see below), whose sum is σ = 152433066240. Its totient is φ = 31007729088.

The previous prime is 81075035773. The next prime is 81075035837. The reversal of 81075035810 is 1853057018.

It is a super-2 number, since 2×81075035810² (a number of 23 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, 1327262 + ... + 1387001.

It is an arithmetic number, because the mean of its divisors is an integer number (4763533320).

Almost surely, 2^81075035810 is an apocalyptic number.

81075035810 is a deficient number, since it is larger than the sum of its proper divisors (71358030430).

81075035810 is a wasteful number, since it uses less digits than its factorization.

81075035810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2714402.

The product of its (nonzero) digits is 33600, while the sum is 38.

The spelling of 81075035810 in words is "eighty-one billion, seventy-five million, thirty-five thousand, eight hundred ten".