2105520525215 has 16 divisors (see below), whose sum is σ = 2581769811456. Its totient is φ = 1648015168800.

The previous prime is 2105520525211. The next prime is 2105520525257. The reversal of 2105520525215 is 5125250255012.

It is not a de Polignac number, because 2105520525215 - 2² = 2105520525211 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2105520525211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22591067 + ... + 22684076.

It is an arithmetic number, because the mean of its divisors is an integer number (161360613216).

Almost surely, 2^{2105520525215} is an apocalyptic number.

2105520525215 is a deficient number, since it is larger than the sum of its proper divisors (476249286241).

2105520525215 is a wasteful number, since it uses less digits than its factorization.

2105520525215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45275350.

The product of its (nonzero) digits is 50000, while the sum is 35.

The spelling of 2105520525215 in words is "two trillion, one hundred five billion, five hundred twenty million, five hundred twenty-five thousand, two hundred fifteen".