144061771640 has 32 divisors (see below), whose sum is σ = 324532910880. Its totient is φ = 57554677632.

The previous prime is 144061771571. The next prime is 144061771643. The reversal of 144061771640 is 46177160441.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144061771643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2155139 + ... + 2220978.

It is an arithmetic number, because the mean of its divisors is an integer number (10141653465).

Almost surely, 2^144061771640 is an apocalyptic number.

144061771640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144061771640 is an abundant number, since it is smaller than the sum of its proper divisors (180471139240).

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

144061771640 is a wasteful number, since it uses less digits than its factorization.

144061771640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4376951 (or 4376947 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 41.

The spelling of 144061771640 in words is "one hundred forty-four billion, sixty-one million, seven hundred seventy-one thousand, six hundred forty".