1453652325421 has 4 divisors (see below), whose sum is σ = 1453795679644. Its totient is φ = 1453508971200.

The previous prime is 1453652325409. The next prime is 1453652325427. The reversal of 1453652325421 is 1245232563541.

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 672541047396 + 781111278025 = 820086^2 + 883805^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1453652325421 is a prime.

It is a super-2 number, since 2×1453652325421² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1453652325427) 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, 71661900 + ... + 71682181.

It is an arithmetic number, because the mean of its divisors is an integer number (363448919911).

Almost surely, 2^{1453652325421} is an apocalyptic number.

It is an amenable number.

1453652325421 is a deficient number, since it is larger than the sum of its proper divisors (143354223).

1453652325421 is a wasteful number, since it uses less digits than its factorization.

1453652325421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143354222.

The product of its digits is 864000, while the sum is 43.

Adding to 1453652325421 its reverse (1245232563541), we get a palindrome (2698884888962).

The spelling of 1453652325421 in words is "one trillion, four hundred fifty-three billion, six hundred fifty-two million, three hundred twenty-five thousand, four hundred twenty-one".