2001521276683 has 2 divisors, whose sum is σ = 2001521276684. Its totient is φ = 2001521276682.

The previous prime is 2001521276609. The next prime is 2001521276719. The reversal of 2001521276683 is 3866721251002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2001521276683 - 2¹³ = 2001521268491 is a prime.

It is not a weakly prime, because it can be changed into another prime (2001521277683) 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, 1000760638341 + 1000760638342.

It is an arithmetic number, because the mean of its divisors is an integer number (1000760638342).

Almost surely, 2^{2001521276683} is an apocalyptic number.

2001521276683 is a deficient number, since it is larger than the sum of its proper divisors (1).

2001521276683 is an equidigital number, since it uses as much as digits as its factorization.

2001521276683 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 241920, while the sum is 43.

The spelling of 2001521276683 in words is "two trillion, one billion, five hundred twenty-one million, two hundred seventy-six thousand, six hundred eighty-three".