421354065770 has 32 divisors (see below), whose sum is σ = 863359482240. Its totient is φ = 146557935040.

The previous prime is 421354065749. The next prime is 421354065773. The reversal of 421354065770 is 77560453124.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (421354065773) 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, 83269025 + ... + 83274084.

It is an arithmetic number, because the mean of its divisors is an integer number (26979983820).

Almost surely, 2^421354065770 is an apocalyptic number.

421354065770 is an abundant number, since it is smaller than the sum of its proper divisors (442005416470).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

421354065770 is a wasteful number, since it uses less digits than its factorization.

421354065770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166543150.

The product of its (nonzero) digits is 705600, while the sum is 44.

The spelling of 421354065770 in words is "four hundred twenty-one billion, three hundred fifty-four million, sixty-five thousand, seven hundred seventy".