44564077997 has 2 divisors, whose sum is σ = 44564077998. Its totient is φ = 44564077996.

The previous prime is 44564077981. The next prime is 44564078113. The reversal of 44564077997 is 79977046544.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32681769961 + 11882308036 = 180781^2 + 109006^2 .

It is a cyclic number.

It is not a de Polignac number, because 44564077997 - 2⁴ = 44564077981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44564071997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22282038998 + 22282038999.

It is an arithmetic number, because the mean of its divisors is an integer number (22282038999).

Almost surely, 2^44564077997 is an apocalyptic number.

It is an amenable number.

44564077997 is a deficient number, since it is larger than the sum of its proper divisors (1).

44564077997 is an equidigital number, since it uses as much as digits as its factorization.

44564077997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 53343360, while the sum is 62.

The spelling of 44564077997 in words is "forty-four billion, five hundred sixty-four million, seventy-seven thousand, nine hundred ninety-seven".