136308746999 has 4 divisors (see below), whose sum is σ = 136329630960. Its totient is φ = 136287863040.

The previous prime is 136308746971. The next prime is 136308747031. The reversal of 136308746999 is 999647803631.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136308746999 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 (136308746929) 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, 10432187 + ... + 10445244.

It is an arithmetic number, because the mean of its divisors is an integer number (34082407740).

Almost surely, 2^136308746999 is an apocalyptic number.

136308746999 is a deficient number, since it is larger than the sum of its proper divisors (20883961).

136308746999 is an equidigital number, since it uses as much as digits as its factorization.

136308746999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20883960.

The product of its (nonzero) digits is 52907904, while the sum is 65.

The spelling of 136308746999 in words is "one hundred thirty-six billion, three hundred eight million, seven hundred forty-six thousand, nine hundred ninety-nine".