135677377427406 has 32 divisors (see below), whose sum is σ = 273360841314048. Its totient is φ = 44891506073280.

The previous prime is 135677377427359. The next prime is 135677377427437. The reversal of 135677377427406 is 604724773776531.

It is a happy number.

It is a congruent number.

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, 1191631 + ... + 16515893.

It is an arithmetic number, because the mean of its divisors is an integer number (8542526291064).

Almost surely, 2^{135677377427406} is an apocalyptic number.

135677377427406 is an abundant number, since it is smaller than the sum of its proper divisors (137683463886642).

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

135677377427406 is a wasteful number, since it uses less digits than its factorization.

135677377427406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15335176.

The product of its (nonzero) digits is 871274880, while the sum is 69.

The spelling of 135677377427406 in words is "one hundred thirty-five trillion, six hundred seventy-seven billion, three hundred seventy-seven million, four hundred twenty-seven thousand, four hundred six".