101647823638045 has 4 divisors (see below), whose sum is σ = 121977388365660. Its totient is φ = 81318258910432.

The previous prime is 101647823638043. The next prime is 101647823638063. The reversal of 101647823638045 is 540836328746101.

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

It can be written as a sum of positive squares in 2 ways, for example, as 75182529857796 + 26465293780249 = 8670786^2 + 5144443^2 .

It is a cyclic number.

It is not a de Polignac number, because 101647823638045 - 2¹ = 101647823638043 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101647823638043) 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, 10164782363800 + ... + 10164782363809.

It is an arithmetic number, because the mean of its divisors is an integer number (30494347091415).

Almost surely, 2^{101647823638045} is an apocalyptic number.

It is an amenable number.

101647823638045 is a deficient number, since it is larger than the sum of its proper divisors (20329564727615).

101647823638045 is an equidigital number, since it uses as much as digits as its factorization.

101647823638045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20329564727614.

The product of its (nonzero) digits is 23224320, while the sum is 58.

The spelling of 101647823638045 in words is "one hundred one trillion, six hundred forty-seven billion, eight hundred twenty-three million, six hundred thirty-eight thousand, forty-five".