81014143347265 has 64 divisors (see below), whose sum is σ = 106041749667840. Its totient is φ = 59190849169920.

The previous prime is 81014143347239. The next prime is 81014143347281. The reversal of 81014143347265 is 56274334141018.

It is not a de Polignac number, because 81014143347265 - 2⁵ = 81014143347233 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1444409052 + ... + 1444465138.

It is an arithmetic number, because the mean of its divisors is an integer number (1656902338560).

Almost surely, 2^{81014143347265} is an apocalyptic number.

It is an amenable number.

81014143347265 is a deficient number, since it is larger than the sum of its proper divisors (25027606320575).

81014143347265 is a wasteful number, since it uses less digits than its factorization.

81014143347265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58022.

The product of its (nonzero) digits is 1935360, while the sum is 49.

The spelling of 81014143347265 in words is "eighty-one trillion, fourteen billion, one hundred forty-three million, three hundred forty-seven thousand, two hundred sixty-five".