135637769393 has 4 divisors (see below), whose sum is σ = 155014593600. Its totient is φ = 116260945188.

The previous prime is 135637769381. The next prime is 135637769417. The reversal of 135637769393 is 393967736531.

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 a cyclic number.

It is not a de Polignac number, because 135637769393 - 2¹⁶ = 135637703857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135637769363) 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, 9688412093 + ... + 9688412106.

It is an arithmetic number, because the mean of its divisors is an integer number (38753648400).

Almost surely, 2^135637769393 is an apocalyptic number.

It is an amenable number.

135637769393 is a deficient number, since it is larger than the sum of its proper divisors (19376824207).

135637769393 is an equidigital number, since it uses as much as digits as its factorization.

135637769393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19376824206.

The product of its digits is 57868020, while the sum is 62.

The spelling of 135637769393 in words is "one hundred thirty-five billion, six hundred thirty-seven million, seven hundred sixty-nine thousand, three hundred ninety-three".