135578723511 has 16 divisors (see below), whose sum is σ = 225377618688. Its totient is φ = 70430505600.

The previous prime is 135578723509. The next prime is 135578723557. The reversal of 135578723511 is 115327875531.

It is a happy number.

It is not a de Polignac number, because 135578723511 - 2¹ = 135578723509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135578723011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 293460210 + ... + 293460671.

It is an arithmetic number, because the mean of its divisors is an integer number (14086101168).

Almost surely, 2^135578723511 is an apocalyptic number.

135578723511 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

135578723511 is a deficient number, since it is larger than the sum of its proper divisors (89798895177).

135578723511 is a wasteful number, since it uses less digits than its factorization.

135578723511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 586920902.

The product of its digits is 882000, while the sum is 48.

The spelling of 135578723511 in words is "one hundred thirty-five billion, five hundred seventy-eight million, seven hundred twenty-three thousand, five hundred eleven".