135858131204 has 12 divisors (see below), whose sum is σ = 237990203724. Its totient is φ = 67860930144.

The previous prime is 135858131177. The next prime is 135858131231. The reversal of 135858131204 is 402131858531.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (135858131177) and next prime (135858131231).

It can be written as a sum of positive squares in 2 ways, for example, as 121745166400 + 14112964804 = 348920^2 + 118798^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17029379 + ... + 17037354.

It is an arithmetic number, because the mean of its divisors is an integer number (19832516977).

Almost surely, 2^135858131204 is an apocalyptic number.

It is an amenable number.

135858131204 is a deficient number, since it is larger than the sum of its proper divisors (102132072520).

135858131204 is a wasteful number, since it uses less digits than its factorization.

135858131204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34067734 (or 34067732 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 41.

Adding to 135858131204 its reverse (402131858531), we get a palindrome (537989989735).

The spelling of 135858131204 in words is "one hundred thirty-five billion, eight hundred fifty-eight million, one hundred thirty-one thousand, two hundred four".