135820369570 has 8 divisors (see below), whose sum is σ = 244476665244. Its totient is φ = 54328147824.

The previous prime is 135820369567. The next prime is 135820369571. The reversal of 135820369570 is 75963028531.

It can be written as a sum of positive squares in 2 ways, for example, as 124317592569 + 11502777001 = 352587^2 + 107251^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (135820369571) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6791018469 + ... + 6791018488.

Almost surely, 2^135820369570 is an apocalyptic number.

135820369570 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

135820369570 is a deficient number, since it is larger than the sum of its proper divisors (108656295674).

135820369570 is a wasteful number, since it uses less digits than its factorization.

135820369570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13582036964.

The product of its (nonzero) digits is 1360800, while the sum is 49.

The spelling of 135820369570 in words is "one hundred thirty-five billion, eight hundred twenty million, three hundred sixty-nine thousand, five hundred seventy".