421055543505535 has 16 divisors (see below), whose sum is σ = 507147963213600. Its totient is φ = 335590242265216.

The previous prime is 421055543505523. The next prime is 421055543505539. The reversal of 421055543505535 is 535505345550124.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 421055543505535 - 2²⁵ = 421055509951103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421055543505539) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 252646797 + ... + 254307913.

It is an arithmetic number, because the mean of its divisors is an integer number (31696747700850).

Almost surely, 2^{421055543505535} is an apocalyptic number.

421055543505535 is a deficient number, since it is larger than the sum of its proper divisors (86092419708065).

421055543505535 is a wasteful number, since it uses less digits than its factorization.

421055543505535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1849850.

The product of its (nonzero) digits is 22500000, while the sum is 52.

The spelling of 421055543505535 in words is "four hundred twenty-one trillion, fifty-five billion, five hundred forty-three million, five hundred five thousand, five hundred thirty-five".