135406251224 has 8 divisors (see below), whose sum is σ = 253886721060. Its totient is φ = 67703125608.

The previous prime is 135406251209. The next prime is 135406251301. The reversal of 135406251224 is 422152604531.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8462890694 + ... + 8462890709.

Almost surely, 2^135406251224 is an apocalyptic number.

It is an amenable number.

135406251224 is a deficient number, since it is larger than the sum of its proper divisors (118480469836).

135406251224 is a wasteful number, since it uses less digits than its factorization.

135406251224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16925781409 (or 16925781405 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 35.

Adding to 135406251224 its reverse (422152604531), we get a palindrome (557558855755).

The spelling of 135406251224 in words is "one hundred thirty-five billion, four hundred six million, two hundred fifty-one thousand, two hundred twenty-four".