421522553543511 has 16 divisors (see below), whose sum is σ = 642475268985600. Its totient is φ = 240811835323008.

The previous prime is 421522553543453. The next prime is 421522553543519. The reversal of 421522553543511 is 115345355225124.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-421522553543511 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421522553543519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2424714066 + ... + 2424887903.

It is an arithmetic number, because the mean of its divisors is an integer number (40154704311600).

Almost surely, 2^{421522553543511} is an apocalyptic number.

421522553543511 is a deficient number, since it is larger than the sum of its proper divisors (220952715442089).

421522553543511 is a wasteful number, since it uses less digits than its factorization.

421522553543511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4849606118.

The product of its digits is 3600000, while the sum is 48.

The spelling of 421522553543511 in words is "four hundred twenty-one trillion, five hundred twenty-two billion, five hundred fifty-three million, five hundred forty-three thousand, five hundred eleven".