4491436738601 has 2 divisors, whose sum is σ = 4491436738602. Its totient is φ = 4491436738600.

The previous prime is 4491436738589. The next prime is 4491436738619. The reversal of 4491436738601 is 1068376341944.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4491436728601 + 10000 = 2119301^2 + 100^2 .

It is a cyclic number.

It is not a de Polignac number, because 4491436738601 - 2²⁶ = 4491369629737 is a prime.

It is not a weakly prime, because it can be changed into another prime (4491436738631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2245718369300 + 2245718369301.

It is an arithmetic number, because the mean of its divisors is an integer number (2245718369301).

Almost surely, 2^{4491436738601} is an apocalyptic number.

It is an amenable number.

4491436738601 is a deficient number, since it is larger than the sum of its proper divisors (1).

4491436738601 is an equidigital number, since it uses as much as digits as its factorization.

4491436738601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10450944, while the sum is 56.

The spelling of 4491436738601 in words is "four trillion, four hundred ninety-one billion, four hundred thirty-six million, seven hundred thirty-eight thousand, six hundred one".