451361421064 has 8 divisors (see below), whose sum is σ = 846302664510. Its totient is φ = 225680710528.

The previous prime is 451361421041. The next prime is 451361421079. The reversal of 451361421064 is 460124163154.

It can be written as a sum of positive squares in only one way, i.e., 271084752964 + 180276668100 = 520658^2 + 424590^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 28210088809 + ... + 28210088824.

Almost surely, 2^451361421064 is an apocalyptic number.

It is an amenable number.

451361421064 is a deficient number, since it is larger than the sum of its proper divisors (394941243446).

451361421064 is a wasteful number, since it uses less digits than its factorization.

451361421064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56420177639 (or 56420177635 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 37.

The spelling of 451361421064 in words is "four hundred fifty-one billion, three hundred sixty-one million, four hundred twenty-one thousand, sixty-four".