20465361461 has 2 divisors, whose sum is σ = 20465361462. Its totient is φ = 20465361460.

The previous prime is 20465361421. The next prime is 20465361467. The reversal of 20465361461 is 16416356402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15093351025 + 5372010436 = 122855^2 + 73294^2 .

It is a cyclic number.

It is not a de Polignac number, because 20465361461 - 2¹⁰ = 20465360437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20465361467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10232680730 + 10232680731.

It is an arithmetic number, because the mean of its divisors is an integer number (10232680731).

Almost surely, 2^20465361461 is an apocalyptic number.

It is an amenable number.

20465361461 is a deficient number, since it is larger than the sum of its proper divisors (1).

20465361461 is an equidigital number, since it uses as much as digits as its factorization.

20465361461 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 103680, while the sum is 38.

The spelling of 20465361461 in words is "twenty billion, four hundred sixty-five million, three hundred sixty-one thousand, four hundred sixty-one".