135532421355123 has 24 divisors (see below), whose sum is σ = 217422161813040. Its totient is φ = 83404566984960.

The previous prime is 135532421355083. The next prime is 135532421355203. The reversal of 135532421355123 is 321553124235531.

It is a happy number.

135532421355123 is a `hidden beast` number, since 1 + 3 + 5 + 5 + 32 + 42 + 1 + 3 + 551 + 23 = 666.

It is not a de Polignac number, because 135532421355123 - 2²¹ = 135532419257971 is a prime.

It is not an unprimeable number, because it can be changed into a prime (135532421355223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14851235998 + ... + 14851245123.

It is an arithmetic number, because the mean of its divisors is an integer number (9059256742210).

Almost surely, 2^{135532421355123} is an apocalyptic number.

135532421355123 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

135532421355123 is a deficient number, since it is larger than the sum of its proper divisors (81889740457917).

135532421355123 is a wasteful number, since it uses less digits than its factorization.

135532421355123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29702481156 (or 29702481137 counting only the distinct ones).

The product of its digits is 1620000, while the sum is 45.

The spelling of 135532421355123 in words is "one hundred thirty-five trillion, five hundred thirty-two billion, four hundred twenty-one million, three hundred fifty-five thousand, one hundred twenty-three".