144531641640 has 64 divisors (see below), whose sum is σ = 438818990400. Its totient is φ = 38077409792.

The previous prime is 144531641603. The next prime is 144531641663. The reversal of 144531641640 is 46146135441.

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, 7245645 + ... + 7265564.

It is an arithmetic number, because the mean of its divisors is an integer number (6856546725).

Almost surely, 2^144531641640 is an apocalyptic number.

144531641640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144531641640 is an abundant number, since it is smaller than the sum of its proper divisors (294287348760).

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

144531641640 is a wasteful number, since it uses less digits than its factorization.

144531641640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14511306 (or 14511302 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 39.

The spelling of 144531641640 in words is "one hundred forty-four billion, five hundred thirty-one million, six hundred forty-one thousand, six hundred forty".