135541413257 has 2 divisors, whose sum is σ = 135541413258. Its totient is φ = 135541413256.

The previous prime is 135541413233. The next prime is 135541413269. The reversal of 135541413257 is 752314145531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 75550218496 + 59991194761 = 274864^2 + 244931^2 .

It is a cyclic number.

It is not a de Polignac number, because 135541413257 - 2⁶ = 135541413193 is a prime.

It is not a weakly prime, because it can be changed into another prime (135541433257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67770706628 + 67770706629.

It is an arithmetic number, because the mean of its divisors is an integer number (67770706629).

Almost surely, 2^135541413257 is an apocalyptic number.

It is an amenable number.

135541413257 is a deficient number, since it is larger than the sum of its proper divisors (1).

135541413257 is an equidigital number, since it uses as much as digits as its factorization.

135541413257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 252000, while the sum is 41.

Adding to 135541413257 its reverse (752314145531), we get a palindrome (887855558788).

The spelling of 135541413257 in words is "one hundred thirty-five billion, five hundred forty-one million, four hundred thirteen thousand, two hundred fifty-seven".