70163233981 has 2 divisors, whose sum is σ = 70163233982. Its totient is φ = 70163233980.

The previous prime is 70163233967. The next prime is 70163234021. The reversal of 70163233981 is 18933236107.

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., 44282468356 + 25880765625 = 210434^2 + 160875^2 .

It is a cyclic number.

It is not a de Polignac number, because 70163233981 - 2¹³ = 70163225789 is a prime.

It is a super-2 number, since 2×70163233981² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70163233951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35081616990 + 35081616991.

It is an arithmetic number, because the mean of its divisors is an integer number (35081616991).

Almost surely, 2^70163233981 is an apocalyptic number.

It is an amenable number.

70163233981 is a deficient number, since it is larger than the sum of its proper divisors (1).

70163233981 is an equidigital number, since it uses as much as digits as its factorization.

70163233981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 163296, while the sum is 43.

The spelling of 70163233981 in words is "seventy billion, one hundred sixty-three million, two hundred thirty-three thousand, nine hundred eighty-one".