1420505553653 has 4 divisors (see below), whose sum is σ = 1428716568588. Its totient is φ = 1412294538720.

The previous prime is 1420505553641. The next prime is 1420505553659. The reversal of 1420505553653 is 3563555050241.

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 1247114928049 + 173390625604 = 1116743^2 + 416402^2 .

It is a cyclic number.

It is not a de Polignac number, because 1420505553653 - 2⁶ = 1420505553589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1420505553659) 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, 4105507208 + ... + 4105507553.

It is an arithmetic number, because the mean of its divisors is an integer number (357179142147).

Almost surely, 2^{1420505553653} is an apocalyptic number.

It is an amenable number.

1420505553653 is a deficient number, since it is larger than the sum of its proper divisors (8211014935).

1420505553653 is an equidigital number, since it uses as much as digits as its factorization.

1420505553653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8211014934.

The product of its (nonzero) digits is 1350000, while the sum is 44.

The spelling of 1420505553653 in words is "one trillion, four hundred twenty billion, five hundred five million, five hundred fifty-three thousand, six hundred fifty-three".