451955623449 has 32 divisors (see below), whose sum is σ = 677883967488. Its totient is φ = 265461840000.

The previous prime is 451955623447. The next prime is 451955623481. The reversal of 451955623449 is 944326559154.

It is not a de Polignac number, because 451955623449 - 2¹ = 451955623447 is a prime.

It is not an unprimeable number, because it can be changed into a prime (451955623447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 901789 + ... + 1310394.

It is an arithmetic number, because the mean of its divisors is an integer number (21183873984).

Almost surely, 2^451955623449 is an apocalyptic number.

It is an amenable number.

451955623449 is a deficient number, since it is larger than the sum of its proper divisors (225928344039).

451955623449 is a wasteful number, since it uses less digits than its factorization.

451955623449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2212389.

The product of its digits is 23328000, while the sum is 57.

The spelling of 451955623449 in words is "four hundred fifty-one billion, nine hundred fifty-five million, six hundred twenty-three thousand, four hundred forty-nine".