2123075201813 has 2 divisors, whose sum is σ = 2123075201814. Its totient is φ = 2123075201812.

The previous prime is 2123075201747. The next prime is 2123075201869. The reversal of 2123075201813 is 3181025703212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2104884475684 + 18190726129 = 1450822^2 + 134873^2 .

It is a cyclic number.

It is not a de Polignac number, because 2123075201813 - 2²² = 2123071007509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2123075203813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1061537600906 + 1061537600907.

It is an arithmetic number, because the mean of its divisors is an integer number (1061537600907).

Almost surely, 2^{2123075201813} is an apocalyptic number.

It is an amenable number.

2123075201813 is a deficient number, since it is larger than the sum of its proper divisors (1).

2123075201813 is an equidigital number, since it uses as much as digits as its factorization.

2123075201813 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 35.

The spelling of 2123075201813 in words is "two trillion, one hundred twenty-three billion, seventy-five million, two hundred one thousand, eight hundred thirteen".