136378619999 has 4 divisors (see below), whose sum is σ = 136949242080. Its totient is φ = 135807997920.

The previous prime is 136378619969. The next prime is 136378620029. The reversal of 136378619999 is 999916873631.

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

It is an interprime number because it is at equal distance from previous prime (136378619969) and next prime (136378620029).

It is a cyclic number.

It is not a de Polignac number, because 136378619999 - 2²⁸ = 136110184543 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 (136378619969) 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, 285310682 + ... + 285311159.

It is an arithmetic number, because the mean of its divisors is an integer number (34237310520).

Almost surely, 2^136378619999 is an apocalyptic number.

136378619999 is a deficient number, since it is larger than the sum of its proper divisors (570622081).

136378619999 is an equidigital number, since it uses as much as digits as its factorization.

136378619999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 570622080.

The product of its digits is 119042784, while the sum is 71.

The spelling of 136378619999 in words is "one hundred thirty-six billion, three hundred seventy-eight million, six hundred nineteen thousand, nine hundred ninety-nine".