73803901054021 has 2 divisors, whose sum is σ = 73803901054022. Its totient is φ = 73803901054020.

The previous prime is 73803901054003. The next prime is 73803901054043. The reversal of 73803901054021 is 12045010930837.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44046450562500 + 29757450491521 = 6636750^2 + 5455039^2 .

It is a cyclic number.

It is not a de Polignac number, because 73803901054021 - 2²⁵ = 73803867499589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73803901054421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36901950527010 + 36901950527011.

It is an arithmetic number, because the mean of its divisors is an integer number (36901950527011).

Almost surely, 2^{73803901054021} is an apocalyptic number.

It is an amenable number.

73803901054021 is a deficient number, since it is larger than the sum of its proper divisors (1).

73803901054021 is an equidigital number, since it uses as much as digits as its factorization.

73803901054021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 181440, while the sum is 43.

Adding to 73803901054021 its reverse (12045010930837), we get a palindrome (85848911984858).

The spelling of 73803901054021 in words is "seventy-three trillion, eight hundred three billion, nine hundred one million, fifty-four thousand, twenty-one".