138699356545 has 8 divisors (see below), whose sum is σ = 166981377024. Its totient is φ = 110598052464.

The previous prime is 138699356531. The next prime is 138699356569. The reversal of 138699356545 is 545653996831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-138699356545 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45177409 + ... + 45180478.

It is an arithmetic number, because the mean of its divisors is an integer number (20872672128).

Almost surely, 2^138699356545 is an apocalyptic number.

It is an amenable number.

138699356545 is a deficient number, since it is larger than the sum of its proper divisors (28282020479).

138699356545 is an equidigital number, since it uses as much as digits as its factorization.

138699356545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90358199.

The product of its digits is 104976000, while the sum is 64.

The spelling of 138699356545 in words is "one hundred thirty-eight billion, six hundred ninety-nine million, three hundred fifty-six thousand, five hundred forty-five".