105452520321013 has 4 divisors (see below), whose sum is σ = 105484064602048. Its totient is φ = 105420976039980.

The previous prime is 105452520320957. The next prime is 105452520321053. The reversal of 105452520321013 is 310123025254501.

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 105452520321013 - 2³⁷ = 105315081367541 is a prime.

It is a super-2 number, since 2×105452520321013² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 105452520321013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105452520321053) 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, 15772135503 + ... + 15772142188.

It is an arithmetic number, because the mean of its divisors is an integer number (26371016150512).

Almost surely, 2^{105452520321013} is an apocalyptic number.

It is an amenable number.

105452520321013 is a deficient number, since it is larger than the sum of its proper divisors (31544281035).

105452520321013 is an equidigital number, since it uses as much as digits as its factorization.

105452520321013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31544281034.

The product of its (nonzero) digits is 36000, while the sum is 34.

Adding to 105452520321013 its reverse (310123025254501), we get a palindrome (415575545575514).

The spelling of 105452520321013 in words is "one hundred five trillion, four hundred fifty-two billion, five hundred twenty million, three hundred twenty-one thousand, thirteen".