1512136553491 has 2 divisors, whose sum is σ = 1512136553492. Its totient is φ = 1512136553490.

The previous prime is 1512136553479. The next prime is 1512136553507. The reversal of 1512136553491 is 1943556312151.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1512136553491 - 2¹⁵ = 1512136520723 is a prime.

It is not a weakly prime, because it can be changed into another prime (1512136553441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 756068276745 + 756068276746.

It is an arithmetic number, because the mean of its divisors is an integer number (756068276746).

Almost surely, 2^{1512136553491} is an apocalyptic number.

1512136553491 is a deficient number, since it is larger than the sum of its proper divisors (1).

1512136553491 is an equidigital number, since it uses as much as digits as its factorization.

1512136553491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 486000, while the sum is 46.

The spelling of 1512136553491 in words is "one trillion, five hundred twelve billion, one hundred thirty-six million, five hundred fifty-three thousand, four hundred ninety-one".