1532321415491 has 2 divisors, whose sum is σ = 1532321415492. Its totient is φ = 1532321415490.

The previous prime is 1532321415487. The next prime is 1532321415533. The reversal of 1532321415491 is 1945141232351.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1532321415491 - 2² = 1532321415487 is a prime.

It is not a weakly prime, because it can be changed into another prime (1532321415421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 766160707745 + 766160707746.

It is an arithmetic number, because the mean of its divisors is an integer number (766160707746).

Almost surely, 2^{1532321415491} is an apocalyptic number.

1532321415491 is a deficient number, since it is larger than the sum of its proper divisors (1).

1532321415491 is an equidigital number, since it uses as much as digits as its factorization.

1532321415491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 129600, while the sum is 41.

The spelling of 1532321415491 in words is "one trillion, five hundred thirty-two billion, three hundred twenty-one million, four hundred fifteen thousand, four hundred ninety-one".