451143223645536 has 192 divisors, whose sum is σ = 1356172777612800. Its totient is φ = 145799698042368.

The previous prime is 451143223645463. The next prime is 451143223645537. The reversal of 451143223645536 is 635546322341154.

451143223645536 is a `hidden beast` number, since 4 + 5 + 1 + 1 + 4 + 3 + 2 + 23 + 64 + 553 + 6 = 666.

It is a super-2 number, since 2×451143223645536² (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (451143223645537) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15886516 + ... + 33980403.

It is an arithmetic number, because the mean of its divisors is an integer number (7063399883400).

Almost surely, 2^{451143223645536} is an apocalyptic number.

It is an amenable number.

451143223645536 is an abundant number, since it is smaller than the sum of its proper divisors (905029553967264).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

451143223645536 is a wasteful number, since it uses less digits than its factorization.

451143223645536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49867258 (or 49867244 counting only the distinct ones).

The product of its digits is 31104000, while the sum is 54.

The spelling of 451143223645536 in words is "four hundred fifty-one trillion, one hundred forty-three billion, two hundred twenty-three million, six hundred forty-five thousand, five hundred thirty-six".