421445059345 has 4 divisors (see below), whose sum is σ = 505734071220. Its totient is φ = 337156047472.

The previous prime is 421445059283. The next prime is 421445059367. The reversal of 421445059345 is 543950544124.

It is a Cunningham number, because it is equal to 649188²+1.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 151719598144 + 269725461201 = 389512^2 + 519351^2 .

It is a cyclic number.

It is not a de Polignac number, because 421445059345 - 2¹⁵ = 421445026577 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 421445059295 and 421445059304.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42144505930 + ... + 42144505939.

It is an arithmetic number, because the mean of its divisors is an integer number (126433517805).

Almost surely, 2^421445059345 is an apocalyptic number.

It is an amenable number.

421445059345 is a deficient number, since it is larger than the sum of its proper divisors (84289011875).

421445059345 is an equidigital number, since it uses as much as digits as its factorization.

421445059345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84289011874.

The product of its (nonzero) digits is 1728000, while the sum is 46.

The spelling of 421445059345 in words is "four hundred twenty-one billion, four hundred forty-five million, fifty-nine thousand, three hundred forty-five".