135421405606 has 16 divisors (see below), whose sum is σ = 204951060000. Its totient is φ = 67106411008.

The previous prime is 135421405583. The next prime is 135421405643. The reversal of 135421405606 is 606504124531.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 372250 + ... + 639853.

It is an arithmetic number, because the mean of its divisors is an integer number (12809441250).

Almost surely, 2^135421405606 is an apocalyptic number.

135421405606 is a deficient number, since it is larger than the sum of its proper divisors (69529654394).

135421405606 is a wasteful number, since it uses less digits than its factorization.

135421405606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1012703.

The product of its (nonzero) digits is 86400, while the sum is 37.

The spelling of 135421405606 in words is "one hundred thirty-five billion, four hundred twenty-one million, four hundred five thousand, six hundred six".