21174582347741 has 2 divisors, whose sum is σ = 21174582347742. Its totient is φ = 21174582347740.

The previous prime is 21174582347719. The next prime is 21174582347749. The reversal of 21174582347741 is 14774328547112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20587590396025 + 586991951716 = 4537355^2 + 766154^2 .

It is a cyclic number.

It is not a de Polignac number, because 21174582347741 - 2¹⁰ = 21174582346717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21174582347749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10587291173870 + 10587291173871.

It is an arithmetic number, because the mean of its divisors is an integer number (10587291173871).

Almost surely, 2^{21174582347741} is an apocalyptic number.

It is an amenable number.

21174582347741 is a deficient number, since it is larger than the sum of its proper divisors (1).

21174582347741 is an equidigital number, since it uses as much as digits as its factorization.

21174582347741 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10536960, while the sum is 56.

The spelling of 21174582347741 in words is "twenty-one trillion, one hundred seventy-four billion, five hundred eighty-two million, three hundred forty-seven thousand, seven hundred forty-one".