135787820555 has 16 divisors (see below), whose sum is σ = 173647632384. Its totient is φ = 101696406240.

The previous prime is 135787820549. The next prime is 135787820573. The reversal of 135787820555 is 555028787531.

It is not a de Polignac number, because 135787820555 - 2⁶ = 135787820491 is a prime.

It is a super-2 number, since 2×135787820555² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 135787820555.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12555911 + ... + 12566720.

It is an arithmetic number, because the mean of its divisors is an integer number (10852977024).

Almost surely, 2^135787820555 is an apocalyptic number.

135787820555 is a deficient number, since it is larger than the sum of its proper divisors (37859811829).

135787820555 is a wasteful number, since it uses less digits than its factorization.

135787820555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25122706.

The product of its (nonzero) digits is 11760000, while the sum is 56.

The spelling of 135787820555 in words is "one hundred thirty-five billion, seven hundred eighty-seven million, eight hundred twenty thousand, five hundred fifty-five".