144991406755 has 32 divisors (see below), whose sum is σ = 187809693120. Its totient is φ = 106821711360.

The previous prime is 144991406723. The next prime is 144991406759. The reversal of 144991406755 is 557604199441.

It is not a de Polignac number, because 144991406755 - 2⁵ = 144991406723 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 144991406696 and 144991406705.

It is not an unprimeable number, because it can be changed into a prime (144991406759) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 89444845 + ... + 89446465.

It is an arithmetic number, because the mean of its divisors is an integer number (5869052910).

Almost surely, 2^144991406755 is an apocalyptic number.

144991406755 is a deficient number, since it is larger than the sum of its proper divisors (42818286365).

144991406755 is a wasteful number, since it uses less digits than its factorization.

144991406755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3991.

The product of its (nonzero) digits is 5443200, while the sum is 55.

The spelling of 144991406755 in words is "one hundred forty-four billion, nine hundred ninety-one million, four hundred six thousand, seven hundred fifty-five".