421770623065 has 32 divisors (see below), whose sum is σ = 553979129472. Its totient is φ = 305719680000.

The previous prime is 421770623003. The next prime is 421770623069. The reversal of 421770623065 is 560326077124.

It is a de Polignac number, because none of the positive numbers 2^k-421770623065 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421770623069) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28465599 + ... + 28480411.

It is an arithmetic number, because the mean of its divisors is an integer number (17311847796).

Almost surely, 2^421770623065 is an apocalyptic number.

It is an amenable number.

421770623065 is a deficient number, since it is larger than the sum of its proper divisors (132208506407).

421770623065 is a wasteful number, since it uses less digits than its factorization.

421770623065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16521.

The product of its (nonzero) digits is 423360, while the sum is 43.

The spelling of 421770623065 in words is "four hundred twenty-one billion, seven hundred seventy million, six hundred twenty-three thousand, sixty-five".