135804915122 has 6 divisors (see below), whose sum is σ = 203708154429. Its totient is φ = 67902196980.

The previous prime is 135804915101. The next prime is 135804915131. The reversal of 135804915122 is 221519408531.

It can be written as a sum of positive squares in 2 ways, for example, as 130551419761 + 5253495361 = 361319^2 + 72481^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=260581.

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 135804915122.

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, 390872 + ... + 651452.

Almost surely, 2^135804915122 is an apocalyptic number.

135804915122 is a deficient number, since it is larger than the sum of its proper divisors (67903239307).

135804915122 is an frugal number, since it uses more digits than its factorization.

135804915122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521164 (or 260583 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 41.

The spelling of 135804915122 in words is "one hundred thirty-five billion, eight hundred four million, nine hundred fifteen thousand, one hundred twenty-two".