102155313005 has 4 divisors (see below), whose sum is σ = 122586375612. Its totient is φ = 81724250400.

The previous prime is 102155312993. The next prime is 102155313011. The reversal of 102155313005 is 500313551201.

It is a happy number.

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 25006361956 + 77148951049 = 158134^2 + 277757^2 .

It is not a de Polignac number, because 102155313005 - 2⁴ = 102155312989 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10215531296 + ... + 10215531305.

It is an arithmetic number, because the mean of its divisors is an integer number (30646593903).

Almost surely, 2^102155313005 is an apocalyptic number.

It is an amenable number.

102155313005 is a deficient number, since it is larger than the sum of its proper divisors (20431062607).

102155313005 is an equidigital number, since it uses as much as digits as its factorization.

102155313005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20431062606.

The product of its (nonzero) digits is 2250, while the sum is 26.

Adding to 102155313005 its reverse (500313551201), we get a palindrome (602468864206).

The spelling of 102155313005 in words is "one hundred two billion, one hundred fifty-five million, three hundred thirteen thousand, five".