135208545988 has 6 divisors (see below), whose sum is σ = 236614955486. Its totient is φ = 67604272992.

The previous prime is 135208545971. The next prime is 135208546021. The reversal of 135208545988 is 889545802531.

It can be written as a sum of positive squares in only one way, i.e., 125813508804 + 9395037184 = 354702^2 + 96928^2 .

It is a super-2 number, since 2×135208545988² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16901068245 + ... + 16901068252.

Almost surely, 2^135208545988 is an apocalyptic number.

It is an amenable number.

135208545988 is a deficient number, since it is larger than the sum of its proper divisors (101406409498).

135208545988 is a wasteful number, since it uses less digits than its factorization.

135208545988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33802136501 (or 33802136499 counting only the distinct ones).

The product of its (nonzero) digits is 13824000, while the sum is 58.

The spelling of 135208545988 in words is "one hundred thirty-five billion, two hundred eight million, five hundred forty-five thousand, nine hundred eighty-eight".