81014272497 has 16 divisors (see below), whose sum is σ = 127081212480. Its totient is φ = 50832484416.

The previous prime is 81014272481. The next prime is 81014272513. The reversal of 81014272497 is 79427241018.

81014272497 is a `hidden beast` number, since 8 + 10 + 142 + 7 + 2 + 497 = 666.

It is an interprime number because it is at equal distance from previous prime (81014272481) and next prime (81014272513).

It is not a de Polignac number, because 81014272497 - 2⁴ = 81014272481 is a prime.

It is not an unprimeable number, because it can be changed into a prime (81014272397) 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, 88250383 + ... + 88251300.

It is an arithmetic number, because the mean of its divisors is an integer number (7942575780).

Almost surely, 2^81014272497 is an apocalyptic number.

It is an amenable number.

81014272497 is a deficient number, since it is larger than the sum of its proper divisors (46066939983).

81014272497 is a wasteful number, since it uses less digits than its factorization.

81014272497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176501709 (or 176501703 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 45.

The spelling of 81014272497 in words is "eighty-one billion, fourteen million, two hundred seventy-two thousand, four hundred ninety-seven".