10455421661 has 2 divisors, whose sum is σ = 10455421662. Its totient is φ = 10455421660.

The previous prime is 10455421637. The next prime is 10455421667. The reversal of 10455421661 is 16612455401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7692342436 + 2763079225 = 87706^2 + 52565^2 .

It is a cyclic number.

It is not a de Polignac number, because 10455421661 - 2¹⁰ = 10455420637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10455421667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5227710830 + 5227710831.

It is an arithmetic number, because the mean of its divisors is an integer number (5227710831).

Almost surely, 2^10455421661 is an apocalyptic number.

It is an amenable number.

10455421661 is a deficient number, since it is larger than the sum of its proper divisors (1).

10455421661 is an equidigital number, since it uses as much as digits as its factorization.

10455421661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28800, while the sum is 35.

The spelling of 10455421661 in words is "ten billion, four hundred fifty-five million, four hundred twenty-one thousand, six hundred sixty-one".