451724021636 has 12 divisors (see below), whose sum is σ = 800041340112. Its totient is φ = 223140781608.

The previous prime is 451724021627. The next prime is 451724021677. The reversal of 451724021636 is 636120427154.

It is a super-2 number, since 2×451724021636² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 451724021593 and 451724021602.

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 in 3 ways as a sum of consecutive naturals, for example, 680306930 + ... + 680307593.

It is an arithmetic number, because the mean of its divisors is an integer number (66670111676).

Almost surely, 2^451724021636 is an apocalyptic number.

It is an amenable number.

451724021636 is a deficient number, since it is larger than the sum of its proper divisors (348317318476).

451724021636 is a wasteful number, since it uses less digits than its factorization.

451724021636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1360614610 (or 1360614608 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 41.

The spelling of 451724021636 in words is "four hundred fifty-one billion, seven hundred twenty-four million, twenty-one thousand, six hundred thirty-six".