70671070777 has 2 divisors, whose sum is σ = 70671070778. Its totient is φ = 70671070776.

The previous prime is 70671070763. The next prime is 70671070793. The reversal of 70671070777 is 77707017607.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61572963321 + 9098107456 = 248139^2 + 95384^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70671070777 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 70671070777.

It is not a weakly prime, because it can be changed into another prime (70671670777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35335535388 + 35335535389.

It is an arithmetic number, because the mean of its divisors is an integer number (35335535389).

Almost surely, 2^70671070777 is an apocalyptic number.

It is an amenable number.

70671070777 is a deficient number, since it is larger than the sum of its proper divisors (1).

70671070777 is an equidigital number, since it uses as much as digits as its factorization.

70671070777 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 705894, while the sum is 49.

The spelling of 70671070777 in words is "seventy billion, six hundred seventy-one million, seventy thousand, seven hundred seventy-seven".