135679951511 has 4 divisors (see below), whose sum is σ = 146116870872. Its totient is φ = 125243032152.

The previous prime is 135679951507. The next prime is 135679951559. The reversal of 135679951511 is 115159976531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 115159976531 = 59 ⋅1951864009.

It is a cyclic number.

It is not a de Polignac number, because 135679951511 - 2² = 135679951507 is a prime.

It is a super-2 number, since 2×135679951511² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135679951111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5218459661 + ... + 5218459686.

It is an arithmetic number, because the mean of its divisors is an integer number (36529217718).

Almost surely, 2^135679951511 is an apocalyptic number.

135679951511 is a deficient number, since it is larger than the sum of its proper divisors (10436919361).

135679951511 is a wasteful number, since it uses less digits than its factorization.

135679951511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10436919360.

The product of its digits is 1275750, while the sum is 53.

The spelling of 135679951511 in words is "one hundred thirty-five billion, six hundred seventy-nine million, nine hundred fifty-one thousand, five hundred eleven".