453420020644 has 24 divisors (see below), whose sum is σ = 795254040000. Its totient is φ = 226204787040.

The previous prime is 453420020611. The next prime is 453420020653. The reversal of 453420020644 is 446020024354.

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 7 ways as a sum of consecutive naturals, for example, 9795234 + ... + 9841414.

It is an arithmetic number, because the mean of its divisors is an integer number (33135585000).

Almost surely, 2^453420020644 is an apocalyptic number.

It is an amenable number.

453420020644 is a deficient number, since it is larger than the sum of its proper divisors (341834019356).

453420020644 is a wasteful number, since it uses less digits than its factorization.

453420020644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51603 (or 51601 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 34.

Adding to 453420020644 its reverse (446020024354), we get a palindrome (899440044998).

The spelling of 453420020644 in words is "four hundred fifty-three billion, four hundred twenty million, twenty thousand, six hundred forty-four".