61070715917 has 2 divisors, whose sum is σ = 61070715918. Its totient is φ = 61070715916.

The previous prime is 61070715907. The next prime is 61070715919. The reversal of 61070715917 is 71951707016.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54099968836 + 6970747081 = 232594^2 + 83491^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61070715917 is a prime.

It is a super-2 number, since 2×61070715917² (a number of 22 digits) contains 22 as substring.

Together with 61070715919, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61070715919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30535357958 + 30535357959.

It is an arithmetic number, because the mean of its divisors is an integer number (30535357959).

Almost surely, 2^61070715917 is an apocalyptic number.

It is an amenable number.

61070715917 is a deficient number, since it is larger than the sum of its proper divisors (1).

61070715917 is an equidigital number, since it uses as much as digits as its factorization.

61070715917 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 92610, while the sum is 44.

The spelling of 61070715917 in words is "sixty-one billion, seventy million, seven hundred fifteen thousand, nine hundred seventeen".