81351463701 has 8 divisors (see below), whose sum is σ = 108475458624. Its totient is φ = 54230888960.

The previous prime is 81351463679. The next prime is 81351463709. The reversal of 81351463701 is 10736415318.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 81351463701 - 2¹⁰ = 81351462677 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 81351463701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81351463709) 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 7 ways as a sum of consecutive naturals, for example, 799020 + ... + 895061.

It is an arithmetic number, because the mean of its divisors is an integer number (13559432328).

Almost surely, 2^81351463701 is an apocalyptic number.

It is an amenable number.

81351463701 is a deficient number, since it is larger than the sum of its proper divisors (27123994923).

81351463701 is a wasteful number, since it uses less digits than its factorization.

81351463701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1710091.

The product of its (nonzero) digits is 60480, while the sum is 39.

The spelling of 81351463701 in words is "eighty-one billion, three hundred fifty-one million, four hundred sixty-three thousand, seven hundred one".