1973050621153 has 2 divisors, whose sum is σ = 1973050621154. Its totient is φ = 1973050621152.

The previous prime is 1973050621093. The next prime is 1973050621189. The reversal of 1973050621153 is 3511260503791.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1905592506624 + 67458114529 = 1380432^2 + 259727^2 .

It is an emirp because it is prime and its reverse (3511260503791) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1973050621153 - 2¹³ = 1973050612961 is a prime.

It is not a weakly prime, because it can be changed into another prime (1973050621753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 986525310576 + 986525310577.

It is an arithmetic number, because the mean of its divisors is an integer number (986525310577).

Almost surely, 2^{1973050621153} is an apocalyptic number.

It is an amenable number.

1973050621153 is a deficient number, since it is larger than the sum of its proper divisors (1).

1973050621153 is an equidigital number, since it uses as much as digits as its factorization.

1973050621153 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 170100, while the sum is 43.

The spelling of 1973050621153 in words is "one trillion, nine hundred seventy-three billion, fifty million, six hundred twenty-one thousand, one hundred fifty-three".