135628466238640 has 40 divisors (see below), whose sum is σ = 321285923335728. Its totient is φ = 53227775427840.

The previous prime is 135628466238541. The next prime is 135628466238677. The reversal of 135628466238640 is 46832664826531.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15993918666 + ... + 15993927145.

Almost surely, 2^{135628466238640} is an apocalyptic number.

135628466238640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135628466238640 is an abundant number, since it is smaller than the sum of its proper divisors (185657457097088).

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

135628466238640 is a wasteful number, since it uses less digits than its factorization.

135628466238640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31987845877 (or 31987845871 counting only the distinct ones).

The product of its (nonzero) digits is 238878720, while the sum is 64.

The spelling of 135628466238640 in words is "one hundred thirty-five trillion, six hundred twenty-eight billion, four hundred sixty-six million, two hundred thirty-eight thousand, six hundred forty".