70947702817 has 2 divisors, whose sum is σ = 70947702818. Its totient is φ = 70947702816.

The previous prime is 70947702769. The next prime is 70947702823. The reversal of 70947702817 is 71820774907.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69725571136 + 1222131681 = 264056^2 + 34959^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70947702817 is a prime.

It is not a weakly prime, because it can be changed into another prime (70947705817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35473851408 + 35473851409.

It is an arithmetic number, because the mean of its divisors is an integer number (35473851409).

Almost surely, 2^70947702817 is an apocalyptic number.

It is an amenable number.

70947702817 is a deficient number, since it is larger than the sum of its proper divisors (1).

70947702817 is an equidigital number, since it uses as much as digits as its factorization.

70947702817 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1382976, while the sum is 52.

The spelling of 70947702817 in words is "seventy billion, nine hundred forty-seven million, seven hundred two thousand, eight hundred seventeen".