2105451325553 has 2 divisors, whose sum is σ = 2105451325554. Its totient is φ = 2105451325552.

The previous prime is 2105451325547. The next prime is 2105451325591. The reversal of 2105451325553 is 3555231545012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1524392723569 + 581058601984 = 1234663^2 + 762272^2 .

It is a cyclic number.

It is not a de Polignac number, because 2105451325553 - 2³⁶ = 2036731848817 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2105451325553.

It is not a weakly prime, because it can be changed into another prime (2105451321553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1052725662776 + 1052725662777.

It is an arithmetic number, because the mean of its divisors is an integer number (1052725662777).

Almost surely, 2^{2105451325553} is an apocalyptic number.

It is an amenable number.

2105451325553 is a deficient number, since it is larger than the sum of its proper divisors (1).

2105451325553 is an equidigital number, since it uses as much as digits as its factorization.

2105451325553 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 450000, while the sum is 41.

The spelling of 2105451325553 in words is "two trillion, one hundred five billion, four hundred fifty-one million, three hundred twenty-five thousand, five hundred fifty-three".