70820670578 has 64 divisors (see below), whose sum is σ = 124868210688. Its totient is φ = 29500701120.

The previous prime is 70820670533. The next prime is 70820670601. The reversal of 70820670578 is 87507602807.

It is a super-2 number, since 2×70820670578² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30045776 + ... + 30048132.

It is an arithmetic number, because the mean of its divisors is an integer number (1951065792).

Almost surely, 2^70820670578 is an apocalyptic number.

70820670578 is a deficient number, since it is larger than the sum of its proper divisors (54047540110).

70820670578 is a wasteful number, since it uses less digits than its factorization.

70820670578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2847.

The product of its (nonzero) digits is 1317120, while the sum is 50.

The spelling of 70820670578 in words is "seventy billion, eight hundred twenty million, six hundred seventy thousand, five hundred seventy-eight".