135386466601 has 3 divisors (see below), whose sum is σ = 135386834551. Its totient is φ = 135386098652.

The previous prime is 135386466587. The next prime is 135386466613. The reversal of 135386466601 is 106664683531.

The square root of 135386466601 is 367949.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 115668690201 + 19717776400 = 340101^2 + 140420^2 .

It is not a de Polignac number, because 135386466601 - 2⁵ = 135386466569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135386466401) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 183975 + ... + 551923.

Almost surely, 2^135386466601 is an apocalyptic number.

135386466601 is the 367949-th square number.

135386466601 is the 183975-th centered octagonal number.

It is an amenable number.

135386466601 is a deficient number, since it is larger than the sum of its proper divisors (367950).

135386466601 is an frugal number, since it uses more digits than its factorization.

135386466601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 735898 (or 367949 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 49.

Multiplying 135386466601 by its sum of digits (49), we get a square (6633936863449 = 2575643²).

The spelling of 135386466601 in words is "one hundred thirty-five billion, three hundred eighty-six million, four hundred sixty-six thousand, six hundred one".