2381521795501 has 2 divisors, whose sum is σ = 2381521795502. Its totient is φ = 2381521795500.

The previous prime is 2381521795487. The next prime is 2381521795577. The reversal of 2381521795501 is 1055971251832.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1205327319876 + 1176194475625 = 1097874^2 + 1084525^2 .

It is a cyclic number.

It is not a de Polignac number, because 2381521795501 - 2⁵ = 2381521795469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2381521792501) 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, 1190760897750 + 1190760897751.

It is an arithmetic number, because the mean of its divisors is an integer number (1190760897751).

Almost surely, 2^{2381521795501} is an apocalyptic number.

It is an amenable number.

2381521795501 is a deficient number, since it is larger than the sum of its proper divisors (1).

2381521795501 is an equidigital number, since it uses as much as digits as its factorization.

2381521795501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756000, while the sum is 49.

The spelling of 2381521795501 in words is "two trillion, three hundred eighty-one billion, five hundred twenty-one million, seven hundred ninety-five thousand, five hundred one".