451821263477 has 16 divisors (see below), whose sum is σ = 497145600000. Its totient is φ = 408764017920.

The previous prime is 451821263473. The next prime is 451821263561. The reversal of 451821263477 is 774362128154.

It is a cyclic number.

It is not a de Polignac number, because 451821263477 - 2² = 451821263473 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 (451821263471) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2798477 + ... + 2955522.

It is an arithmetic number, because the mean of its divisors is an integer number (31071600000).

Almost surely, 2^451821263477 is an apocalyptic number.

It is an amenable number.

451821263477 is a deficient number, since it is larger than the sum of its proper divisors (45324336523).

451821263477 is a wasteful number, since it uses less digits than its factorization.

451821263477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5754196.

The product of its digits is 2257920, while the sum is 50.

The spelling of 451821263477 in words is "four hundred fifty-one billion, eight hundred twenty-one million, two hundred sixty-three thousand, four hundred seventy-seven".