70641766851 has 8 divisors (see below), whose sum is σ = 99146339520. Its totient is φ = 44615852712.

The previous prime is 70641766849. The next prime is 70641766879. The reversal of 70641766851 is 15866714607.

It is a happy number.

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

It is not a de Polignac number, because 70641766851 - 2¹ = 70641766849 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 70641766794 and 70641766803.

It is not an unprimeable number, because it can be changed into a prime (70641766831) 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 7 ways as a sum of consecutive naturals, for example, 619664565 + ... + 619664678.

It is an arithmetic number, because the mean of its divisors is an integer number (12393292440).

Almost surely, 2^70641766851 is an apocalyptic number.

70641766851 is a deficient number, since it is larger than the sum of its proper divisors (28504572669).

70641766851 is a wasteful number, since it uses less digits than its factorization.

70641766851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1239329265.

The product of its (nonzero) digits is 1693440, while the sum is 51.

The spelling of 70641766851 in words is "seventy billion, six hundred forty-one million, seven hundred sixty-six thousand, eight hundred fifty-one".