135555555678 has 24 divisors (see below), whose sum is σ = 274416948168. Its totient is φ = 44640771792.

The previous prime is 135555555671. The next prime is 135555555713. The reversal of 135555555678 is 876555555531.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135555555671) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1598425 + ... + 1681092.

It is an arithmetic number, because the mean of its divisors is an integer number (11434039507).

Almost surely, 2^135555555678 is an apocalyptic number.

135555555678 is an abundant number, since it is smaller than the sum of its proper divisors (138861392490).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

135555555678 is an equidigital number, since it uses as much as digits as its factorization.

135555555678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3279688 (or 3279605 counting only the distinct ones).

The product of its digits is 78750000, while the sum is 60.

The spelling of 135555555678 in words is "one hundred thirty-five billion, five hundred fifty-five million, five hundred fifty-five thousand, six hundred seventy-eight".