421001525340555 has 64 divisors (see below), whose sum is σ = 704934987595776. Its totient is φ = 214329456000000.

The previous prime is 421001525340551. The next prime is 421001525340673. The reversal of 421001525340555 is 555043525100124.

It is a happy number.

It is not a de Polignac number, because 421001525340555 - 2² = 421001525340551 is a prime.

It is not an unprimeable number, because it can be changed into a prime (421001525340551) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 89657430 + ... + 94236180.

It is an arithmetic number, because the mean of its divisors is an integer number (11014609181184).

Almost surely, 2^{421001525340555} is an apocalyptic number.

421001525340555 is a deficient number, since it is larger than the sum of its proper divisors (283933462255221).

421001525340555 is a wasteful number, since it uses less digits than its factorization.

421001525340555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4582028.

The product of its (nonzero) digits is 600000, while the sum is 42.

The spelling of 421001525340555 in words is "four hundred twenty-one trillion, one billion, five hundred twenty-five million, three hundred forty thousand, five hundred fifty-five".