21580100741 has 2 divisors, whose sum is σ = 21580100742. Its totient is φ = 21580100740.

The previous prime is 21580100719. The next prime is 21580100771. The reversal of 21580100741 is 14700108512.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19531180516 + 2048920225 = 139754^2 + 45265^2 .

It is a cyclic number.

It is not a de Polignac number, because 21580100741 - 2³⁴ = 4400231557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21580100771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10790050370 + 10790050371.

It is an arithmetic number, because the mean of its divisors is an integer number (10790050371).

Almost surely, 2^21580100741 is an apocalyptic number.

It is an amenable number.

21580100741 is a deficient number, since it is larger than the sum of its proper divisors (1).

21580100741 is an equidigital number, since it uses as much as digits as its factorization.

21580100741 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2240, while the sum is 29.

The spelling of 21580100741 in words is "twenty-one billion, five hundred eighty million, one hundred thousand, seven hundred forty-one".