70866633818 has 8 divisors (see below), whose sum is σ = 106301789748. Its totient is φ = 35432703904.

The previous prime is 70866633809. The next prime is 70866633863. The reversal of 70866633818 is 81833666807.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 58299551209 + 12567082609 = 241453^2 + 112103^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144971 + ... + 403422.

Almost surely, 2^70866633818 is an apocalyptic number.

70866633818 is a deficient number, since it is larger than the sum of its proper divisors (35435155930).

70866633818 is a wasteful number, since it uses less digits than its factorization.

70866633818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 613008.

The product of its (nonzero) digits is 6967296, while the sum is 56.

The spelling of 70866633818 in words is "seventy billion, eight hundred sixty-six million, six hundred thirty-three thousand, eight hundred eighteen".