144997766938 has 8 divisors (see below), whose sum is σ = 217635099840. Its totient is φ = 72452733660.

The previous prime is 144997766891. The next prime is 144997766939. The reversal of 144997766938 is 839667799441.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (144997766939) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23070978 + ... + 23077261.

It is an arithmetic number, because the mean of its divisors is an integer number (27204387480).

Almost surely, 2^144997766938 is an apocalyptic number.

144997766938 is a deficient number, since it is larger than the sum of its proper divisors (72637332902).

144997766938 is a wasteful number, since it uses less digits than its factorization.

144997766938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46149812.

The product of its digits is 493807104, while the sum is 73.

The spelling of 144997766938 in words is "one hundred forty-four billion, nine hundred ninety-seven million, seven hundred sixty-six thousand, nine hundred thirty-eight".