451613609988 has 12 divisors (see below), whose sum is σ = 1053765090000. Its totient is φ = 150537869992.

The previous prime is 451613609933. The next prime is 451613609989. The reversal of 451613609988 is 889906316154.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (451613609989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18817233738 + ... + 18817233761.

It is an arithmetic number, because the mean of its divisors is an integer number (87813757500).

Almost surely, 2^451613609988 is an apocalyptic number.

It is an amenable number.

451613609988 is an abundant number, since it is smaller than the sum of its proper divisors (602151480012).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

451613609988 is a wasteful number, since it uses less digits than its factorization.

451613609988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37634467506 (or 37634467504 counting only the distinct ones).

The product of its (nonzero) digits is 11197440, while the sum is 60.

It can be divided in two parts, 451613 and 609988, that added together give a palindrome (1061601).

The spelling of 451613609988 in words is "four hundred fifty-one billion, six hundred thirteen million, six hundred nine thousand, nine hundred eighty-eight".