144661433820 has 48 divisors (see below), whose sum is σ = 408984576000. Its totient is φ = 38201852736.

The previous prime is 144661433801. The next prime is 144661433837. The reversal of 144661433820 is 28334166441.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11697820 + ... + 11710179.

It is an arithmetic number, because the mean of its divisors is an integer number (8520512000).

Almost surely, 2^144661433820 is an apocalyptic number.

144661433820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144661433820 is an abundant number, since it is smaller than the sum of its proper divisors (264323142180).

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

144661433820 is a wasteful number, since it uses less digits than its factorization.

144661433820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23408114 (or 23408112 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 42.

The spelling of 144661433820 in words is "one hundred forty-four billion, six hundred sixty-one million, four hundred thirty-three thousand, eight hundred twenty".