20233551361973 has 2 divisors, whose sum is σ = 20233551361974. Its totient is φ = 20233551361972.

The previous prime is 20233551361963. The next prime is 20233551361987. The reversal of 20233551361973 is 37916315533202.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19884669763729 + 348881598244 = 4459223^2 + 590662^2 .

It is a cyclic number.

It is not a de Polignac number, because 20233551361973 - 2⁶ = 20233551361909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20233551361943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10116775680986 + 10116775680987.

It is an arithmetic number, because the mean of its divisors is an integer number (10116775680987).

Almost surely, 2^{20233551361973} is an apocalyptic number.

It is an amenable number.

20233551361973 is a deficient number, since it is larger than the sum of its proper divisors (1).

20233551361973 is an equidigital number, since it uses as much as digits as its factorization.

20233551361973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3061800, while the sum is 50.

The spelling of 20233551361973 in words is "twenty trillion, two hundred thirty-three billion, five hundred fifty-one million, three hundred sixty-one thousand, nine hundred seventy-three".