81214075348 has 12 divisors (see below), whose sum is σ = 162428150752. Its totient is φ = 34806032280.

The previous prime is 81214075331. The next prime is 81214075351. The reversal of 81214075348 is 84357041218.

81214075348 is an admirable number.

It is a super-2 number, since 2×81214075348² (a number of 23 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

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 3 ways as a sum of consecutive naturals, for example, 1450251318 + ... + 1450251373.

Almost surely, 2^81214075348 is an apocalyptic number.

It is an amenable number.

81214075348 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

81214075348 is a wasteful number, since it uses less digits than its factorization.

81214075348 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2900502702 (or 2900502700 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 43.

The spelling of 81214075348 in words is "eighty-one billion, two hundred fourteen million, seventy-five thousand, three hundred forty-eight".