21063792903397 has 2 divisors, whose sum is σ = 21063792903398. Its totient is φ = 21063792903396.

The previous prime is 21063792903383. The next prime is 21063792903403. The reversal of 21063792903397 is 79330929736012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18854648733636 + 2209144169761 = 4342194^2 + 1486319^2 .

It is a cyclic number.

It is not a de Polignac number, because 21063792903397 - 2²³ = 21063784514789 is a prime.

It is a super-3 number, since 3×21063792903397³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21063792903997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10531896451698 + 10531896451699.

It is an arithmetic number, because the mean of its divisors is an integer number (10531896451699).

Almost surely, 2^{21063792903397} is an apocalyptic number.

It is an amenable number.

21063792903397 is a deficient number, since it is larger than the sum of its proper divisors (1).

21063792903397 is an equidigital number, since it uses as much as digits as its factorization.

21063792903397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23147208, while the sum is 61.

The spelling of 21063792903397 in words is "twenty-one trillion, sixty-three billion, seven hundred ninety-two million, nine hundred three thousand, three hundred ninety-seven".