81914314493270 has 64 divisors (see below), whose sum is σ = 180588267611136. Its totient is φ = 26137775537280.

The previous prime is 81914314493251. The next prime is 81914314493299. The reversal of 81914314493270 is 7239441341918.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 687487136 + ... + 687606275.

It is an arithmetic number, because the mean of its divisors is an integer number (2821691681424).

Almost surely, 2^{81914314493270} is an apocalyptic number.

81914314493270 is an abundant number, since it is smaller than the sum of its proper divisors (98673953117866).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

81914314493270 is a wasteful number, since it uses less digits than its factorization.

81914314493270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1375093485.

The product of its (nonzero) digits is 5225472, while the sum is 56.

The spelling of 81914314493270 in words is "eighty-one trillion, nine hundred fourteen billion, three hundred fourteen million, four hundred ninety-three thousand, two hundred seventy".