70561671937 has 2 divisors, whose sum is σ = 70561671938. Its totient is φ = 70561671936.

The previous prime is 70561671907. The next prime is 70561671941. The reversal of 70561671937 is 73917616507.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63103449616 + 7458222321 = 251204^2 + 86361^2 .

It is a cyclic number.

It is not a de Polignac number, because 70561671937 - 2¹¹ = 70561669889 is a prime.

It is not a weakly prime, because it can be changed into another prime (70561671907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35280835968 + 35280835969.

It is an arithmetic number, because the mean of its divisors is an integer number (35280835969).

Almost surely, 2^70561671937 is an apocalyptic number.

It is an amenable number.

70561671937 is a deficient number, since it is larger than the sum of its proper divisors (1).

70561671937 is an equidigital number, since it uses as much as digits as its factorization.

70561671937 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1666980, while the sum is 52.

The spelling of 70561671937 in words is "seventy billion, five hundred sixty-one million, six hundred seventy-one thousand, nine hundred thirty-seven".