45955550561 has 2 divisors, whose sum is σ = 45955550562. Its totient is φ = 45955550560.

The previous prime is 45955550539. The next prime is 45955550569. The reversal of 45955550561 is 16505555954.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30921112336 + 15034438225 = 175844^2 + 122615^2 .

It is a cyclic number.

It is not a de Polignac number, because 45955550561 - 2¹⁰ = 45955549537 is a prime.

It is a super-2 number, since 2×45955550561² (a number of 22 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 (45955550569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22977775280 + 22977775281.

It is an arithmetic number, because the mean of its divisors is an integer number (22977775281).

Almost surely, 2^45955550561 is an apocalyptic number.

It is an amenable number.

45955550561 is a deficient number, since it is larger than the sum of its proper divisors (1).

45955550561 is an equidigital number, since it uses as much as digits as its factorization.

45955550561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3375000, while the sum is 50.

The spelling of 45955550561 in words is "forty-five billion, nine hundred fifty-five million, five hundred fifty thousand, five hundred sixty-one".