135468867749 has 8 divisors (see below), whose sum is σ = 135847806072. Its totient is φ = 135090014400.

The previous prime is 135468867727. The next prime is 135468867761. The reversal of 135468867749 is 947768864531.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 21474850849 + 113994016900 = 146543^2 + 337630^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 135468867749 - 2¹⁶ = 135468802213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135468867799) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4498667 + ... + 4528679.

It is an arithmetic number, because the mean of its divisors is an integer number (16980975759).

Almost surely, 2^135468867749 is an apocalyptic number.

It is an amenable number.

135468867749 is a deficient number, since it is larger than the sum of its proper divisors (378938323).

135468867749 is a wasteful number, since it uses less digits than its factorization.

135468867749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42487.

The product of its digits is 243855360, while the sum is 68.

The spelling of 135468867749 in words is "one hundred thirty-five billion, four hundred sixty-eight million, eight hundred sixty-seven thousand, seven hundred forty-nine".