144723887920 has 40 divisors (see below), whose sum is σ = 337890962880. Its totient is φ = 57647331840.

The previous prime is 144723887911. The next prime is 144723887921. The reversal of 144723887920 is 29788327441.

It is a tau number, because it is divible by the number of its divisors (40).

It is a hoax number, since the sum of its digits (55) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (144723887921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3765501 + ... + 3803740.

It is an arithmetic number, because the mean of its divisors is an integer number (8447274072).

Almost surely, 2^144723887920 is an apocalyptic number.

144723887920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144723887920 is an abundant number, since it is smaller than the sum of its proper divisors (193167074960).

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

144723887920 is a wasteful number, since it uses less digits than its factorization.

144723887920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7569493 (or 7569487 counting only the distinct ones).

The product of its (nonzero) digits is 5419008, while the sum is 55.

The spelling of 144723887920 in words is "one hundred forty-four billion, seven hundred twenty-three million, eight hundred eighty-seven thousand, nine hundred twenty".