70689518945 has 4 divisors (see below), whose sum is σ = 84827422740. Its totient is φ = 56551615152.

The previous prime is 70689518909. The next prime is 70689518959. The reversal of 70689518945 is 54981598607.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 35976984976 + 34712533969 = 189676^2 + 186313^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70689518945 is a prime.

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, 7068951890 + ... + 7068951899.

It is an arithmetic number, because the mean of its divisors is an integer number (21206855685).

Almost surely, 2^70689518945 is an apocalyptic number.

It is an amenable number.

70689518945 is a deficient number, since it is larger than the sum of its proper divisors (14137903795).

70689518945 is a wasteful number, since it uses less digits than its factorization.

70689518945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14137903794.

The product of its (nonzero) digits is 21772800, while the sum is 62.

The spelling of 70689518945 in words is "seventy billion, six hundred eighty-nine million, five hundred eighteen thousand, nine hundred forty-five".