70870257481 has 2 divisors, whose sum is σ = 70870257482. Its totient is φ = 70870257480.

The previous prime is 70870257473. The next prime is 70870257517. The reversal of 70870257481 is 18475207807.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48514027081 + 22356230400 = 220259^2 + 149520^2 .

It is a cyclic number.

It is not a de Polignac number, because 70870257481 - 2³ = 70870257473 is a prime.

It is a super-2 number, since 2×70870257481² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (70870257401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35435128740 + 35435128741.

It is an arithmetic number, because the mean of its divisors is an integer number (35435128741).

Almost surely, 2^70870257481 is an apocalyptic number.

It is an amenable number.

70870257481 is a deficient number, since it is larger than the sum of its proper divisors (1).

70870257481 is an equidigital number, since it uses as much as digits as its factorization.

70870257481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 878080, while the sum is 49.

The spelling of 70870257481 in words is "seventy billion, eight hundred seventy million, two hundred fifty-seven thousand, four hundred eighty-one".