135397056369 has 4 divisors (see below), whose sum is σ = 180529408496. Its totient is φ = 90264704244.

The previous prime is 135397056367. The next prime is 135397056371. The reversal of 135397056369 is 963650793531.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (135397056367) and next prime (135397056371).

It is not a de Polignac number, because 135397056369 - 2¹ = 135397056367 is a prime.

It is a super-2 number, since 2×135397056369² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (135397056367) 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, 22566176059 + ... + 22566176064.

It is an arithmetic number, because the mean of its divisors is an integer number (45132352124).

Almost surely, 2^135397056369 is an apocalyptic number.

It is an amenable number.

135397056369 is a deficient number, since it is larger than the sum of its proper divisors (45132352127).

135397056369 is an equidigital number, since it uses as much as digits as its factorization.

135397056369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45132352126.

The product of its (nonzero) digits is 13778100, while the sum is 57.

The spelling of 135397056369 in words is "one hundred thirty-five billion, three hundred ninety-seven million, fifty-six thousand, three hundred sixty-nine".