81473891512003 has 2 divisors, whose sum is σ = 81473891512004. Its totient is φ = 81473891512002.

The previous prime is 81473891511977. The next prime is 81473891512093. The reversal of 81473891512003 is 30021519837418.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 81473891512003 - 2¹³ = 81473891503811 is a prime.

It is not a weakly prime, because it can be changed into another prime (81473891512093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40736945756001 + 40736945756002.

It is an arithmetic number, because the mean of its divisors is an integer number (40736945756002).

Almost surely, 2^{81473891512003} is an apocalyptic number.

81473891512003 is a deficient number, since it is larger than the sum of its proper divisors (1).

81473891512003 is an equidigital number, since it uses as much as digits as its factorization.

81473891512003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1451520, while the sum is 52.

The spelling of 81473891512003 in words is "eighty-one trillion, four hundred seventy-three billion, eight hundred ninety-one million, five hundred twelve thousand, three".