12703521406 has 4 divisors (see below), whose sum is σ = 19055282112. Its totient is φ = 6351760702.

The previous prime is 12703521401. The next prime is 12703521407. The reversal of 12703521406 is 60412530721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60412530721 = 67 ⋅901679563.

It is a super-2 number, since 2×12703521406² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12703521401) 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 as a sum of consecutive naturals, namely, 3175880350 + ... + 3175880353.

It is an arithmetic number, because the mean of its divisors is an integer number (4763820528).

Almost surely, 2^12703521406 is an apocalyptic number.

12703521406 is a deficient number, since it is larger than the sum of its proper divisors (6351760706).

12703521406 is an equidigital number, since it uses as much as digits as its factorization.

12703521406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6351760705.

The product of its (nonzero) digits is 10080, while the sum is 31.

The spelling of 12703521406 in words is "twelve billion, seven hundred three million, five hundred twenty-one thousand, four hundred six".