144715220242540 has 48 divisors (see below), whose sum is σ = 305033495445504. Its totient is φ = 57670572196800.

The previous prime is 144715220242459. The next prime is 144715220242543. The reversal of 144715220242540 is 45242022517441.

It is not an unprimeable number, because it can be changed into a prime (144715220242543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 168844557 + ... + 169699483.

It is an arithmetic number, because the mean of its divisors is an integer number (6354864488448).

Almost surely, 2^{144715220242540} is an apocalyptic number.

144715220242540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144715220242540 is an abundant number, since it is smaller than the sum of its proper divisors (160318275202964).

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

144715220242540 is a wasteful number, since it uses less digits than its factorization.

144715220242540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 886438 (or 886436 counting only the distinct ones).

The product of its (nonzero) digits is 716800, while the sum is 43.

Adding to 144715220242540 its reverse (45242022517441), we get a palindrome (189957242759981).

The spelling of 144715220242540 in words is "one hundred forty-four trillion, seven hundred fifteen billion, two hundred twenty million, two hundred forty-two thousand, five hundred forty".