70690255561 has 2 divisors, whose sum is σ = 70690255562. Its totient is φ = 70690255560.

The previous prime is 70690255549. The next prime is 70690255607. The reversal of 70690255561 is 16555209607.

It is an a-pointer prime, because the next prime (70690255607) can be obtained adding 70690255561 to its sum of digits (46).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41720513536 + 28969742025 = 204256^2 + 170205^2 .

It is a cyclic number.

It is not a de Polignac number, because 70690255561 - 2¹⁵ = 70690222793 is a prime.

It is a super-2 number, since 2×70690255561² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (70690255061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35345127780 + 35345127781.

It is an arithmetic number, because the mean of its divisors is an integer number (35345127781).

Almost surely, 2^70690255561 is an apocalyptic number.

It is an amenable number.

70690255561 is a deficient number, since it is larger than the sum of its proper divisors (1).

70690255561 is an equidigital number, since it uses as much as digits as its factorization.

70690255561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 567000, while the sum is 46.

The spelling of 70690255561 in words is "seventy billion, six hundred ninety million, two hundred fifty-five thousand, five hundred sixty-one".