34561415561 has 2 divisors, whose sum is σ = 34561415562. Its totient is φ = 34561415560.

The previous prime is 34561415557. The next prime is 34561415617. The reversal of 34561415561 is 16551416543.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23899614025 + 10661801536 = 154595^2 + 103256^2 .

It is a cyclic number.

It is not a de Polignac number, because 34561415561 - 2² = 34561415557 is a prime.

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 (34561415261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17280707780 + 17280707781.

It is an arithmetic number, because the mean of its divisors is an integer number (17280707781).

Almost surely, 2^34561415561 is an apocalyptic number.

It is an amenable number.

34561415561 is a deficient number, since it is larger than the sum of its proper divisors (1).

34561415561 is an equidigital number, since it uses as much as digits as its factorization.

34561415561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 216000, while the sum is 41.

The spelling of 34561415561 in words is "thirty-four billion, five hundred sixty-one million, four hundred fifteen thousand, five hundred sixty-one".