421344524054451 has 64 divisors (see below), whose sum is σ = 617918383555200. Its totient is φ = 254192303210496.

The previous prime is 421344524054413. The next prime is 421344524054459. The reversal of 421344524054451 is 154450425443124.

It is a happy number.

It is not a de Polignac number, because 421344524054451 - 2²¹ = 421344521957299 is a prime.

It is a super-2 number, since 2×421344524054451² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 421344524054451.

It is not an unprimeable number, because it can be changed into a prime (421344524054459) 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, 1373158735 + ... + 1373465543.

It is an arithmetic number, because the mean of its divisors is an integer number (9654974743050).

Almost surely, 2^{421344524054451} is an apocalyptic number.

421344524054451 is a deficient number, since it is larger than the sum of its proper divisors (196573859500749).

421344524054451 is a wasteful number, since it uses less digits than its factorization.

421344524054451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310728.

The product of its (nonzero) digits is 6144000, while the sum is 48.

Adding to 421344524054451 its reverse (154450425443124), we get a palindrome (575794949497575).

The spelling of 421344524054451 in words is "four hundred twenty-one trillion, three hundred forty-four billion, five hundred twenty-four million, fifty-four thousand, four hundred fifty-one".