135515101511 has 4 divisors (see below), whose sum is σ = 135533003592. Its totient is φ = 135497199432.

The previous prime is 135515101483. The next prime is 135515101529. The reversal of 135515101511 is 115101515531.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 135515101511 - 2¹⁸ = 135514839367 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 (135515101411) 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, 8939681 + ... + 8954826.

It is an arithmetic number, because the mean of its divisors is an integer number (33883250898).

Almost surely, 2^135515101511 is an apocalyptic number.

135515101511 is a deficient number, since it is larger than the sum of its proper divisors (17902081).

135515101511 is an equidigital number, since it uses as much as digits as its factorization.

135515101511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17902080.

The product of its (nonzero) digits is 1875, while the sum is 29.

The spelling of 135515101511 in words is "one hundred thirty-five billion, five hundred fifteen million, one hundred one thousand, five hundred eleven".