70943061617 has 4 divisors (see below), whose sum is σ = 71072756976. Its totient is φ = 70813366260.

The previous prime is 70943061613. The next prime is 70943061619. The reversal of 70943061617 is 71616034907.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 71616034907 = 37 ⋅1935568511.

It is a cyclic number.

It is not a de Polignac number, because 70943061617 - 2² = 70943061613 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70943061613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64846859 + ... + 64847952.

It is an arithmetic number, because the mean of its divisors is an integer number (17768189244).

Almost surely, 2^70943061617 is an apocalyptic number.

It is an amenable number.

70943061617 is a deficient number, since it is larger than the sum of its proper divisors (129695359).

70943061617 is a wasteful number, since it uses less digits than its factorization.

70943061617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129695358.

The product of its (nonzero) digits is 190512, while the sum is 44.

The spelling of 70943061617 in words is "seventy billion, nine hundred forty-three million, sixty-one thousand, six hundred seventeen".