135913485523 has 2 divisors, whose sum is σ = 135913485524. Its totient is φ = 135913485522.

The previous prime is 135913485467. The next prime is 135913485551. The reversal of 135913485523 is 325584319531.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135913485523 is a prime.

It is not a weakly prime, because it can be changed into another prime (135913485923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67956742761 + 67956742762.

It is an arithmetic number, because the mean of its divisors is an integer number (67956742762).

Almost surely, 2^135913485523 is an apocalyptic number.

135913485523 is a deficient number, since it is larger than the sum of its proper divisors (1).

135913485523 is an equidigital number, since it uses as much as digits as its factorization.

135913485523 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1944000, while the sum is 49.

The spelling of 135913485523 in words is "one hundred thirty-five billion, nine hundred thirteen million, four hundred eighty-five thousand, five hundred twenty-three".