135440346722 has 6 divisors (see below), whose sum is σ = 203161300779. Its totient is φ = 67719913130.

The previous prime is 135440346709. The next prime is 135440346739. The reversal of 135440346722 is 227643044531.

It can be written as a sum of positive squares in only one way, i.e., 67720173361 + 67720173361 = 260231^2 + 260231^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=260231.

It is a super-2 number, since 2×135440346722² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 135440346722.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 390347 + ... + 650577.

Almost surely, 2^135440346722 is an apocalyptic number.

135440346722 is a deficient number, since it is larger than the sum of its proper divisors (67720954057).

135440346722 is an frugal number, since it uses more digits than its factorization.

135440346722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520464 (or 260233 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 41.

The spelling of 135440346722 in words is "one hundred thirty-five billion, four hundred forty million, three hundred forty-six thousand, seven hundred twenty-two".