135253521364 has 24 divisors (see below), whose sum is σ = 269895037608. Its totient is φ = 58752660480.

The previous prime is 135253521331. The next prime is 135253521367. The reversal of 135253521364 is 463125352531.

It can be written as a sum of positive squares in 4 ways, for example, as 57240562500 + 78012958864 = 239250^2 + 279308^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135253521367) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76499977 + ... + 76501744.

It is an arithmetic number, because the mean of its divisors is an integer number (11245626567).

Almost surely, 2^135253521364 is an apocalyptic number.

It is an amenable number.

135253521364 is a deficient number, since it is larger than the sum of its proper divisors (134641516244).

135253521364 is a wasteful number, since it uses less digits than its factorization.

135253521364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153001755 (or 153001753 counting only the distinct ones).

The product of its digits is 324000, while the sum is 40.

Adding to 135253521364 its reverse (463125352531), we get a palindrome (598378873895).

The spelling of 135253521364 in words is "one hundred thirty-five billion, two hundred fifty-three million, five hundred twenty-one thousand, three hundred sixty-four".