501001100077 has 2 divisors, whose sum is σ = 501001100078. Its totient is φ = 501001100076.

The previous prime is 501001100063. The next prime is 501001100113. The reversal of 501001100077 is 770001100105.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 497287294596 + 3713805481 = 705186^2 + 60941^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-501001100077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (501001100057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250500550038 + 250500550039.

It is an arithmetic number, because the mean of its divisors is an integer number (250500550039).

Almost surely, 2^501001100077 is an apocalyptic number.

It is an amenable number.

501001100077 is a deficient number, since it is larger than the sum of its proper divisors (1).

501001100077 is an equidigital number, since it uses as much as digits as its factorization.

501001100077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 245, while the sum is 22.

The spelling of 501001100077 in words is "five hundred one billion, one million, one hundred thousand, seventy-seven".