134517523687 has 4 divisors (see below), whose sum is σ = 142430319216. Its totient is φ = 126604728160.

The previous prime is 134517523681. The next prime is 134517523697. The reversal of 134517523687 is 786325715431.

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 134517523687 - 2¹¹ = 134517521639 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 (134517523681) 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, 3956397739 + ... + 3956397772.

It is an arithmetic number, because the mean of its divisors is an integer number (35607579804).

Almost surely, 2^134517523687 is an apocalyptic number.

134517523687 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

134517523687 is a deficient number, since it is larger than the sum of its proper divisors (7912795529).

134517523687 is an equidigital number, since it uses as much as digits as its factorization.

134517523687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7912795528.

The product of its digits is 4233600, while the sum is 52.

The spelling of 134517523687 in words is "one hundred thirty-four billion, five hundred seventeen million, five hundred twenty-three thousand, six hundred eighty-seven".