70785058691 has 2 divisors, whose sum is σ = 70785058692. Its totient is φ = 70785058690.

The previous prime is 70785058667. The next prime is 70785058693. The reversal of 70785058691 is 19685058707.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 70785058691 - 2²² = 70780864387 is a prime.

Together with 70785058693, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (70785058693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35392529345 + 35392529346.

It is an arithmetic number, because the mean of its divisors is an integer number (35392529346).

Almost surely, 2^70785058691 is an apocalyptic number.

70785058691 is a deficient number, since it is larger than the sum of its proper divisors (1).

70785058691 is an equidigital number, since it uses as much as digits as its factorization.

70785058691 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4233600, while the sum is 56.

The spelling of 70785058691 in words is "seventy billion, seven hundred eighty-five million, fifty-eight thousand, six hundred ninety-one".