70983998381 has 2 divisors, whose sum is σ = 70983998382. Its totient is φ = 70983998380.

The previous prime is 70983998357. The next prime is 70983998417. The reversal of 70983998381 is 18389938907.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46188457225 + 24795541156 = 214915^2 + 157466^2 .

It is a cyclic number.

It is not a de Polignac number, because 70983998381 - 2¹⁸ = 70983736237 is a prime.

It is a super-2 number, since 2×70983998381² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70983998341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35491999190 + 35491999191.

It is an arithmetic number, because the mean of its divisors is an integer number (35491999191).

Almost surely, 2^70983998381 is an apocalyptic number.

It is an amenable number.

70983998381 is a deficient number, since it is larger than the sum of its proper divisors (1).

70983998381 is an equidigital number, since it uses as much as digits as its factorization.

70983998381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23514624, while the sum is 65.

The spelling of 70983998381 in words is "seventy billion, nine hundred eighty-three million, nine hundred ninety-eight thousand, three hundred eighty-one".