136329987499 has 4 divisors (see below), whose sum is σ = 138250128240. Its totient is φ = 134409846760.

The previous prime is 136329987419. The next prime is 136329987529. The reversal of 136329987499 is 994789923631.

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 136329987499 - 2⁷ = 136329987371 is a prime.

It is a super-3 number, since 3×136329987499³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136329987419) 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, 960070264 + ... + 960070405.

It is an arithmetic number, because the mean of its divisors is an integer number (34562532060).

Almost surely, 2^136329987499 is an apocalyptic number.

136329987499 is a deficient number, since it is larger than the sum of its proper divisors (1920140741).

136329987499 is an equidigital number, since it uses as much as digits as its factorization.

136329987499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1920140740.

The product of its digits is 158723712, while the sum is 70.

The spelling of 136329987499 in words is "one hundred thirty-six billion, three hundred twenty-nine million, nine hundred eighty-seven thousand, four hundred ninety-nine".