135778516 has 6 divisors (see below), whose sum is σ = 237612410. Its totient is φ = 67889256.

The previous prime is 135778471. The next prime is 135778523. The reversal of 135778516 is 615877531.

It can be written as a sum of positive squares in only one way, i.e., 127916100 + 7862416 = 11310^2 + 2804^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16972311 + ... + 16972318.

Almost surely, 2^135778516 is an apocalyptic number.

It is an amenable number.

135778516 is a deficient number, since it is larger than the sum of its proper divisors (101833894).

135778516 is a wasteful number, since it uses less digits than its factorization.

135778516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33944633 (or 33944631 counting only the distinct ones).

The product of its digits is 176400, while the sum is 43.

The square root of 135778516 is about 11652.4038721630. The cubic root of 135778516 is about 513.9770008937.

The spelling of 135778516 in words is "one hundred thirty-five million, seven hundred seventy-eight thousand, five hundred sixteen".