1451305200021 has 24 divisors (see below), whose sum is σ = 2002148949120. Its totient is φ = 934963852992.

The previous prime is 1451305200017. The next prime is 1451305200031. The reversal of 1451305200021 is 1200025031541.

It is a happy number.

It is not a de Polignac number, because 1451305200021 - 2² = 1451305200017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1451305199964 and 1451305200000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1451305200031) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 862536 + ... + 1909601.

It is an arithmetic number, because the mean of its divisors is an integer number (83422872880).

Almost surely, 2^{1451305200021} is an apocalyptic number.

It is an amenable number.

1451305200021 is a deficient number, since it is larger than the sum of its proper divisors (550843749099).

1451305200021 is an equidigital number, since it uses as much as digits as its factorization.

1451305200021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2772313 (or 2772266 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

The spelling of 1451305200021 in words is "one trillion, four hundred fifty-one billion, three hundred five million, two hundred thousand, twenty-one".