1451442636403 has 4 divisors (see below), whose sum is σ = 1451761849800. Its totient is φ = 1451123423008.

The previous prime is 1451442636379. The next prime is 1451442636503. The reversal of 1451442636403 is 3046362441541.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1451442636403 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1451442636403.

It is not an unprimeable number, because it can be changed into a prime (1451442636503) 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, 159599878 + ... + 159608971.

It is an arithmetic number, because the mean of its divisors is an integer number (362940462450).

Almost surely, 2^{1451442636403} is an apocalyptic number.

1451442636403 is a deficient number, since it is larger than the sum of its proper divisors (319213397).

1451442636403 is an equidigital number, since it uses as much as digits as its factorization.

1451442636403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319213396.

The product of its (nonzero) digits is 829440, while the sum is 43.

The spelling of 1451442636403 in words is "one trillion, four hundred fifty-one billion, four hundred forty-two million, six hundred thirty-six thousand, four hundred three".