70427779117 has 2 divisors, whose sum is σ = 70427779118. Its totient is φ = 70427779116.

The previous prime is 70427779091. The next prime is 70427779141. The reversal of 70427779117 is 71197772407.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52054247716 + 18373531401 = 228154^2 + 135549^2 .

It is a cyclic number.

It is not a de Polignac number, because 70427779117 - 2³¹ = 68280295469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70427779517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35213889558 + 35213889559.

It is an arithmetic number, because the mean of its divisors is an integer number (35213889559).

Almost surely, 2^70427779117 is an apocalyptic number.

It is an amenable number.

70427779117 is a deficient number, since it is larger than the sum of its proper divisors (1).

70427779117 is an equidigital number, since it uses as much as digits as its factorization.

70427779117 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1210104, while the sum is 52.

The spelling of 70427779117 in words is "seventy billion, four hundred twenty-seven million, seven hundred seventy-nine thousand, one hundred seventeen".