12553016421 has 16 divisors (see below), whose sum is σ = 18368275968. Its totient is φ = 7562329200.

The previous prime is 12553016419. The next prime is 12553016491. The reversal of 12553016421 is 12461035521.

It is not a de Polignac number, because 12553016421 - 2¹ = 12553016419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12553016401) 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 15 ways as a sum of consecutive naturals, for example, 1133395 + ... + 1144416.

It is an arithmetic number, because the mean of its divisors is an integer number (1148017248).

Almost surely, 2^12553016421 is an apocalyptic number.

12553016421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12553016421 is a deficient number, since it is larger than the sum of its proper divisors (5815259547).

12553016421 is a wasteful number, since it uses less digits than its factorization.

12553016421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2277992.

The product of its (nonzero) digits is 7200, while the sum is 30.

The spelling of 12553016421 in words is "twelve billion, five hundred fifty-three million, sixteen thousand, four hundred twenty-one".