1420919583505 has 4 divisors (see below), whose sum is σ = 1705103500212. Its totient is φ = 1136735666800.

The previous prime is 1420919583469. The next prime is 1420919583509. The reversal of 1420919583505 is 5053859190241.

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 196028448001 + 1224891135504 = 442751^2 + 1106748^2 .

It is not a de Polignac number, because 1420919583505 - 2²⁷ = 1420785365777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1420919583509) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142091958346 + ... + 142091958355.

It is an arithmetic number, because the mean of its divisors is an integer number (426275875053).

Almost surely, 2^{1420919583505} is an apocalyptic number.

It is an amenable number.

1420919583505 is a deficient number, since it is larger than the sum of its proper divisors (284183916707).

1420919583505 is an equidigital number, since it uses as much as digits as its factorization.

1420919583505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284183916706.

The product of its (nonzero) digits is 1944000, while the sum is 52.

The spelling of 1420919583505 in words is "one trillion, four hundred twenty billion, nine hundred nineteen million, five hundred eighty-three thousand, five hundred five".