19972037231273 has 2 divisors, whose sum is σ = 19972037231274. Its totient is φ = 19972037231272.

The previous prime is 19972037231269. The next prime is 19972037231309. The reversal of 19972037231273 is 37213273027991.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10032980230144 + 9939057001129 = 3167488^2 + 3152627^2 .

It is a cyclic number.

It is not a de Polignac number, because 19972037231273 - 2² = 19972037231269 is a prime.

It is not a weakly prime, because it can be changed into another prime (19972037231873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9986018615636 + 9986018615637.

It is an arithmetic number, because the mean of its divisors is an integer number (9986018615637).

Almost surely, 2^{19972037231273} is an apocalyptic number.

It is an amenable number.

19972037231273 is a deficient number, since it is larger than the sum of its proper divisors (1).

19972037231273 is an equidigital number, since it uses as much as digits as its factorization.

19972037231273 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6001128, while the sum is 56.

The spelling of 19972037231273 in words is "nineteen trillion, nine hundred seventy-two billion, thirty-seven million, two hundred thirty-one thousand, two hundred seventy-three".