70678516647 has 16 divisors (see below), whose sum is σ = 94812897888. Its totient is φ = 46831747200.

The previous prime is 70678516637. The next prime is 70678516663. The reversal of 70678516647 is 74661587607.

It is not a de Polignac number, because 70678516647 - 2¹⁵ = 70678483879 is a prime.

It is a super-2 number, since 2×70678516647² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70678516637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1751397 + ... + 1791297.

It is an arithmetic number, because the mean of its divisors is an integer number (5925806118).

Almost surely, 2^70678516647 is an apocalyptic number.

70678516647 is a deficient number, since it is larger than the sum of its proper divisors (24134381241).

70678516647 is a wasteful number, since it uses less digits than its factorization.

70678516647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43490.

The product of its (nonzero) digits is 11854080, while the sum is 57.

The spelling of 70678516647 in words is "seventy billion, six hundred seventy-eight million, five hundred sixteen thousand, six hundred forty-seven".