1451113244621 has 4 divisors (see below), whose sum is σ = 1451118859932. Its totient is φ = 1451107629312.

The previous prime is 1451113244587. The next prime is 1451113244639. The reversal of 1451113244621 is 1264423111541.

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 669991360900 + 781121883721 = 818530^2 + 883811^2 .

It is a cyclic number.

It is not a de Polignac number, because 1451113244621 - 2¹⁸ = 1451112982477 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 (1451113246621) 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, 2400326 + ... + 2943431.

It is an arithmetic number, because the mean of its divisors is an integer number (362779714983).

Almost surely, 2^{1451113244621} is an apocalyptic number.

It is an amenable number.

1451113244621 is a deficient number, since it is larger than the sum of its proper divisors (5615311).

1451113244621 is an equidigital number, since it uses as much as digits as its factorization.

1451113244621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5615310.

The product of its digits is 23040, while the sum is 35.

The spelling of 1451113244621 in words is "one trillion, four hundred fifty-one billion, one hundred thirteen million, two hundred forty-four thousand, six hundred twenty-one".