70557171617 has 4 divisors (see below), whose sum is σ = 71888439060. Its totient is φ = 69225904176.

The previous prime is 70557171577. The next prime is 70557171623. The reversal of 70557171617 is 71617175507.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 30752532496 + 39804639121 = 175364^2 + 199511^2 .

It is a cyclic number.

It is not a de Polignac number, because 70557171617 - 2¹² = 70557167521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70557171667) 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 in 3 ways as a sum of consecutive naturals, for example, 665633642 + ... + 665633747.

It is an arithmetic number, because the mean of its divisors is an integer number (17972109765).

Almost surely, 2^70557171617 is an apocalyptic number.

It is an amenable number.

70557171617 is a deficient number, since it is larger than the sum of its proper divisors (1331267443).

70557171617 is a wasteful number, since it uses less digits than its factorization.

70557171617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1331267442.

The product of its (nonzero) digits is 360150, while the sum is 47.

The spelling of 70557171617 in words is "seventy billion, five hundred fifty-seven million, one hundred seventy-one thousand, six hundred seventeen".