7521448694387 has 2 divisors, whose sum is σ = 7521448694388. Its totient is φ = 7521448694386.

The previous prime is 7521448694363. The next prime is 7521448694429. The reversal of 7521448694387 is 7834968441257.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7521448694387 - 2¹² = 7521448690291 is a prime.

It is not a weakly prime, because it can be changed into another prime (7521448394387) 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, 3760724347193 + 3760724347194.

It is an arithmetic number, because the mean of its divisors is an integer number (3760724347194).

Almost surely, 2^{7521448694387} is an apocalyptic number.

7521448694387 is a deficient number, since it is larger than the sum of its proper divisors (1).

7521448694387 is an equidigital number, since it uses as much as digits as its factorization.

7521448694387 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 325140480, while the sum is 68.

The spelling of 7521448694387 in words is "seven trillion, five hundred twenty-one billion, four hundred forty-eight million, six hundred ninety-four thousand, three hundred eighty-seven".