44780268917 has 2 divisors, whose sum is σ = 44780268918. Its totient is φ = 44780268916.

The previous prime is 44780268881. The next prime is 44780268937. The reversal of 44780268917 is 71986208744.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30706954756 + 14073314161 = 175234^2 + 118631^2 .

It is a cyclic number.

It is not a de Polignac number, because 44780268917 - 2⁸ = 44780268661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44780268937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22390134458 + 22390134459.

It is an arithmetic number, because the mean of its divisors is an integer number (22390134459).

Almost surely, 2^44780268917 is an apocalyptic number.

It is an amenable number.

44780268917 is a deficient number, since it is larger than the sum of its proper divisors (1).

44780268917 is an equidigital number, since it uses as much as digits as its factorization.

44780268917 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5419008, while the sum is 56.

The spelling of 44780268917 in words is "forty-four billion, seven hundred eighty million, two hundred sixty-eight thousand, nine hundred seventeen".