81270000703 has 4 divisors (see below), whose sum is σ = 81270605448. Its totient is φ = 81269395960.

The previous prime is 81270000689. The next prime is 81270000727. The reversal of 81270000703 is 30700007218.

It is a happy number.

81270000703 is a nontrivial binomial coefficient, being equal to C(403163, 2).

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 30700007218 = 2 ⋅15350003609.

It is not a de Polignac number, because 81270000703 - 2¹³ = 81269992511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81270000103) by changing a digit.

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, 1 + ... + 403162.

It is an arithmetic number, because the mean of its divisors is an integer number (20317651362).

Almost surely, 2^81270000703 is an apocalyptic number.

81270000703 is the 403162-nd triangular number.

81270000703 is the 134388-th centered nonagonal number.

81270000703 is a deficient number, since it is larger than the sum of its proper divisors (604745).

81270000703 is a wasteful number, since it uses less digits than its factorization.

81270000703 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 604744.

The product of its (nonzero) digits is 2352, while the sum is 28.

The spelling of 81270000703 in words is "eighty-one billion, two hundred seventy million, seven hundred three", and thus it is an aban number.