144216694640 has 40 divisors (see below), whose sum is σ = 346120073088. Its totient is φ = 55825816320.

The previous prime is 144216694627. The next prime is 144216694651. The reversal of 144216694640 is 46496612441.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29073467 + ... + 29078426.

Almost surely, 2^144216694640 is an apocalyptic number.

144216694640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144216694640 is an abundant number, since it is smaller than the sum of its proper divisors (201903378448).

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

144216694640 is a wasteful number, since it uses less digits than its factorization.

144216694640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58151937 (or 58151931 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 47.

The spelling of 144216694640 in words is "one hundred forty-four billion, two hundred sixteen million, six hundred ninety-four thousand, six hundred forty".