40545664548461 has 2 divisors, whose sum is σ = 40545664548462. Its totient is φ = 40545664548460.

The previous prime is 40545664548449. The next prime is 40545664548469. The reversal of 40545664548461 is 16484546654504.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37185372276361 + 3360292272100 = 6097981^2 + 1833110^2 .

It is a cyclic number.

It is not a de Polignac number, because 40545664548461 - 2³⁰ = 40544590806637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40545664548394 and 40545664548403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40545664548469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20272832274230 + 20272832274231.

It is an arithmetic number, because the mean of its divisors is an integer number (20272832274231).

Almost surely, 2^{40545664548461} is an apocalyptic number.

It is an amenable number.

40545664548461 is a deficient number, since it is larger than the sum of its proper divisors (1).

40545664548461 is an equidigital number, since it uses as much as digits as its factorization.

40545664548461 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 221184000, while the sum is 62.

The spelling of 40545664548461 in words is "forty trillion, five hundred forty-five billion, six hundred sixty-four million, five hundred forty-eight thousand, four hundred sixty-one".