1451203540643 has 4 divisors (see below), whose sum is σ = 1451214579360. Its totient is φ = 1451192501928.

The previous prime is 1451203540639. The next prime is 1451203540649. The reversal of 1451203540643 is 3460453021541.

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

It is a cyclic number.

It is not a de Polignac number, because 1451203540643 - 2² = 1451203540639 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1451203540597 and 1451203540606.

It is not an unprimeable number, because it can be changed into a prime (1451203540649) 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, 5319755 + ... + 5585892.

It is an arithmetic number, because the mean of its divisors is an integer number (362803644840).

Almost surely, 2^{1451203540643} is an apocalyptic number.

1451203540643 is a deficient number, since it is larger than the sum of its proper divisors (11038717).

1451203540643 is a wasteful number, since it uses less digits than its factorization.

1451203540643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11038716.

The product of its (nonzero) digits is 172800, while the sum is 38.

The spelling of 1451203540643 in words is "one trillion, four hundred fifty-one billion, two hundred three million, five hundred forty thousand, six hundred forty-three".