70863356917 has 8 divisors (see below), whose sum is σ = 71022477240. Its totient is φ = 70704392640.

The previous prime is 70863356911. The next prime is 70863356939. The reversal of 70863356917 is 71965336807.

It can be written as a sum of positive squares in 4 ways, for example, as 2812286961 + 68051069956 = 53031^2 + 260866^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70863356917 is a prime.

It is a super-2 number, since 2×70863356917² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70863356911) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 895167 + ... + 971107.

It is an arithmetic number, because the mean of its divisors is an integer number (8877809655).

Almost surely, 2^70863356917 is an apocalyptic number.

It is an amenable number.

70863356917 is a deficient number, since it is larger than the sum of its proper divisors (159120323).

70863356917 is a wasteful number, since it uses less digits than its factorization.

70863356917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78023.

The product of its (nonzero) digits is 5715360, while the sum is 55.

The spelling of 70863356917 in words is "seventy billion, eight hundred sixty-three million, three hundred fifty-six thousand, nine hundred seventeen".