2145342215641 has 2 divisors, whose sum is σ = 2145342215642. Its totient is φ = 2145342215640.

The previous prime is 2145342215593. The next prime is 2145342215711. The reversal of 2145342215641 is 1465122435412.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2144405855641 + 936360000 = 1464379^2 + 30600^2 .

It is a cyclic number.

It is not a de Polignac number, because 2145342215641 - 2⁹ = 2145342215129 is a prime.

It is a super-2 number, since 2×2145342215641² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2145342215594 and 2145342215603.

It is not a weakly prime, because it can be changed into another prime (2145342212641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1072671107820 + 1072671107821.

It is an arithmetic number, because the mean of its divisors is an integer number (1072671107821).

Almost surely, 2^{2145342215641} is an apocalyptic number.

It is an amenable number.

2145342215641 is a deficient number, since it is larger than the sum of its proper divisors (1).

2145342215641 is an equidigital number, since it uses as much as digits as its factorization.

2145342215641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 230400, while the sum is 40.

The spelling of 2145342215641 in words is "two trillion, one hundred forty-five billion, three hundred forty-two million, two hundred fifteen thousand, six hundred forty-one".