135064640621 has 8 divisors (see below), whose sum is σ = 140485855488. Its totient is φ = 129709944000.

The previous prime is 135064640609. The next prime is 135064640647. The reversal of 135064640621 is 126046460531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135064640621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135064640651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16625420 + ... + 16633541.

It is an arithmetic number, because the mean of its divisors is an integer number (17560731936).

Almost surely, 2^135064640621 is an apocalyptic number.

It is an amenable number.

135064640621 is a deficient number, since it is larger than the sum of its proper divisors (5421214867).

135064640621 is a wasteful number, since it uses less digits than its factorization.

135064640621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33259123.

The product of its (nonzero) digits is 103680, while the sum is 38.

The spelling of 135064640621 in words is "one hundred thirty-five billion, sixty-four million, six hundred forty thousand, six hundred twenty-one".