81403828366283 has 8 divisors (see below), whose sum is σ = 83704781000880. Its totient is φ = 79108183582560.

The previous prime is 81403828366253. The next prime is 81403828366349. The reversal of 81403828366283 is 38266382830418.

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 81403828366283 - 2²² = 81403824171979 is a prime.

It is a super-2 number, since 2×81403828366283² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (81403828366213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1326931613 + ... + 1326992958.

It is an arithmetic number, because the mean of its divisors is an integer number (10463097625110).

Almost surely, 2^{81403828366283} is an apocalyptic number.

81403828366283 is a deficient number, since it is larger than the sum of its proper divisors (2300952634597).

81403828366283 is a wasteful number, since it uses less digits than its factorization.

81403828366283 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2653925437.

The product of its (nonzero) digits is 63700992, while the sum is 62.

The spelling of 81403828366283 in words is "eighty-one trillion, four hundred three billion, eight hundred twenty-eight million, three hundred sixty-six thousand, two hundred eighty-three".