2145195503687 has 2 divisors, whose sum is σ = 2145195503688. Its totient is φ = 2145195503686.

The previous prime is 2145195503677. The next prime is 2145195503809. The reversal of 2145195503687 is 7863055915412.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2145195503687 - 2⁶ = 2145195503623 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2145195503677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1072597751843 + 1072597751844.

It is an arithmetic number, because the mean of its divisors is an integer number (1072597751844).

It is a 1-persistent number, because it is pandigital, but 2⋅2145195503687 = 4290391007374 is not.

Almost surely, 2^{2145195503687} is an apocalyptic number.

2145195503687 is a deficient number, since it is larger than the sum of its proper divisors (1).

2145195503687 is an equidigital number, since it uses as much as digits as its factorization.

2145195503687 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072000, while the sum is 56.

The spelling of 2145195503687 in words is "two trillion, one hundred forty-five billion, one hundred ninety-five million, five hundred three thousand, six hundred eighty-seven".