135125667898 has 8 divisors (see below), whose sum is σ = 218279925108. Its totient is φ = 62365692864.

The previous prime is 135125667811. The next prime is 135125667949. The reversal of 135125667898 is 898766521531.

It can be written as a sum of positive squares in 2 ways, for example, as 133658241649 + 1467426249 = 365593^2 + 38307^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×135125667898² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2598570511 + ... + 2598570562.

Almost surely, 2^135125667898 is an apocalyptic number.

135125667898 is a deficient number, since it is larger than the sum of its proper divisors (83154257210).

135125667898 is a wasteful number, since it uses less digits than its factorization.

135125667898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5197141088.

The product of its digits is 21772800, while the sum is 61.

The spelling of 135125667898 in words is "one hundred thirty-five billion, one hundred twenty-five million, six hundred sixty-seven thousand, eight hundred ninety-eight".