128315153732613 has 4 divisors (see below), whose sum is σ = 171086871643488. Its totient is φ = 85543435821740.

The previous prime is 128315153732609. The next prime is 128315153732641. The reversal of 128315153732613 is 316237351513821.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 128315153732613 - 2² = 128315153732609 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128315153732653) 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, 21385858955433 + ... + 21385858955438.

It is an arithmetic number, because the mean of its divisors is an integer number (42771717910872).

Almost surely, 2^{128315153732613} is an apocalyptic number.

It is an amenable number.

128315153732613 is a deficient number, since it is larger than the sum of its proper divisors (42771717910875).

128315153732613 is an equidigital number, since it uses as much as digits as its factorization.

128315153732613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42771717910874.

The product of its digits is 2721600, while the sum is 51.

The spelling of 128315153732613 in words is "one hundred twenty-eight trillion, three hundred fifteen billion, one hundred fifty-three million, seven hundred thirty-two thousand, six hundred thirteen".