144635713820 has 96 divisors (see below), whose sum is σ = 331040001600. Its totient is φ = 52761544704.

The previous prime is 144635713777. The next prime is 144635713847. The reversal of 144635713820 is 28317536441.

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 31 ways as a sum of consecutive naturals, for example, 53428907 + ... + 53431613.

It is an arithmetic number, because the mean of its divisors is an integer number (3448333350).

Almost surely, 2^144635713820 is an apocalyptic number.

144635713820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 144635713820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (165520000800).

144635713820 is an abundant number, since it is smaller than the sum of its proper divisors (186404287780).

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

144635713820 is a wasteful number, since it uses less digits than its factorization.

144635713820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5127 (or 5125 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 44.

The spelling of 144635713820 in words is "one hundred forty-four billion, six hundred thirty-five million, seven hundred thirteen thousand, eight hundred twenty".