135815916169 has 8 divisors (see below), whose sum is σ = 141773284808. Its totient is φ = 129978898560.

The previous prime is 135815916157. The next prime is 135815916193. The reversal of 135815916169 is 961619518531.

It can be written as a sum of positive squares in 4 ways, for example, as 55394329600 + 80421586569 = 235360^2 + 283587^2 .

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 135815916169 - 2¹⁷ = 135815785097 is a prime.

It is a super-2 number, since 2×135815916169² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135815917169) 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, 30085452 + ... + 30089965.

It is an arithmetic number, because the mean of its divisors is an integer number (17721660601).

Almost surely, 2^135815916169 is an apocalyptic number.

It is an amenable number.

135815916169 is a deficient number, since it is larger than the sum of its proper divisors (5957368639).

135815916169 is an equidigital number, since it uses as much as digits as its factorization.

135815916169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60175515.

The product of its digits is 1749600, while the sum is 55.

The spelling of 135815916169 in words is "one hundred thirty-five billion, eight hundred fifteen million, nine hundred sixteen thousand, one hundred sixty-nine".