61070716381 has 2 divisors, whose sum is σ = 61070716382. Its totient is φ = 61070716380.

The previous prime is 61070716327. The next prime is 61070716423. The reversal of 61070716381 is 18361707016.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54771913156 + 6298803225 = 234034^2 + 79365^2 .

It is a cyclic number.

It is not a de Polignac number, because 61070716381 - 2¹⁵ = 61070683613 is a prime.

It is a super-2 number, since 2×61070716381² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61070716981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30535358190 + 30535358191.

It is an arithmetic number, because the mean of its divisors is an integer number (30535358191).

Almost surely, 2^61070716381 is an apocalyptic number.

It is an amenable number.

61070716381 is a deficient number, since it is larger than the sum of its proper divisors (1).

61070716381 is an equidigital number, since it uses as much as digits as its factorization.

61070716381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42336, while the sum is 40.

The spelling of 61070716381 in words is "sixty-one billion, seventy million, seven hundred sixteen thousand, three hundred eighty-one".