451887423121 has 2 divisors, whose sum is σ = 451887423122. Its totient is φ = 451887423120.

The previous prime is 451887423073. The next prime is 451887423257. The reversal of 451887423121 is 121324788154.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 229517646400 + 222369776721 = 479080^2 + 471561^2 .

It is a cyclic number.

It is not a de Polignac number, because 451887423121 - 2¹³ = 451887414929 is a prime.

It is not a weakly prime, because it can be changed into another prime (451087423121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225943711560 + 225943711561.

It is an arithmetic number, because the mean of its divisors is an integer number (225943711561).

Almost surely, 2^451887423121 is an apocalyptic number.

It is an amenable number.

451887423121 is a deficient number, since it is larger than the sum of its proper divisors (1).

451887423121 is an equidigital number, since it uses as much as digits as its factorization.

451887423121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 430080, while the sum is 46.

The spelling of 451887423121 in words is "four hundred fifty-one billion, eight hundred eighty-seven million, four hundred twenty-three thousand, one hundred twenty-one".