10541137721 has 2 divisors, whose sum is σ = 10541137722. Its totient is φ = 10541137720.

The previous prime is 10541137667. The next prime is 10541137727. The reversal of 10541137721 is 12773114501.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9571687225 + 969450496 = 97835^2 + 31136^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10541137721 is a prime.

It is a super-2 number, since 2×10541137721² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (10541137727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5270568860 + 5270568861.

It is an arithmetic number, because the mean of its divisors is an integer number (5270568861).

Almost surely, 2^10541137721 is an apocalyptic number.

It is an amenable number.

10541137721 is a deficient number, since it is larger than the sum of its proper divisors (1).

10541137721 is an equidigital number, since it uses as much as digits as its factorization.

10541137721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5880, while the sum is 32.

The spelling of 10541137721 in words is "ten billion, five hundred forty-one million, one hundred thirty-seven thousand, seven hundred twenty-one".