245213511352105 has 4 divisors (see below), whose sum is σ = 294256213622532. Its totient is φ = 196170809081680.

The previous prime is 245213511352093. The next prime is 245213511352127. The reversal of 245213511352105 is 501253115312542.

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 139670702151696 + 105542809200409 = 11818236^2 + 10273403^2 .

It is not a de Polignac number, because 245213511352105 - 2⁹ = 245213511351593 is a prime.

It is a super-2 number, since 2×245213511352105² (a number of 30 digits) contains 22 as substring.

It is a Duffinian 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, 24521351135206 + ... + 24521351135215.

It is an arithmetic number, because the mean of its divisors is an integer number (73564053405633).

Almost surely, 2^{245213511352105} is an apocalyptic number.

It is an amenable number.

245213511352105 is a deficient number, since it is larger than the sum of its proper divisors (49042702270427).

245213511352105 is an equidigital number, since it uses as much as digits as its factorization.

245213511352105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49042702270426.

The product of its (nonzero) digits is 180000, while the sum is 40.

Adding to 245213511352105 its reverse (501253115312542), we get a palindrome (746466626664647).

The spelling of 245213511352105 in words is "two hundred forty-five trillion, two hundred thirteen billion, five hundred eleven million, three hundred fifty-two thousand, one hundred five".