135779123408 has 10 divisors (see below), whose sum is σ = 263072051634. Its totient is φ = 67889561696.

The previous prime is 135779123401. The next prime is 135779123423. The reversal of 135779123408 is 804321977531.

It can be written as a sum of positive squares in only one way, i.e., 117890595904 + 17888527504 = 343352^2 + 133748^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135779123401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4243097591 + ... + 4243097622.

Almost surely, 2^135779123408 is an apocalyptic number.

It is an amenable number.

135779123408 is a deficient number, since it is larger than the sum of its proper divisors (127292928226).

135779123408 is an equidigital number, since it uses as much as digits as its factorization.

135779123408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8486195221 (or 8486195215 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 50.

The spelling of 135779123408 in words is "one hundred thirty-five billion, seven hundred seventy-nine million, one hundred twenty-three thousand, four hundred eight".