70520486389 has 2 divisors, whose sum is σ = 70520486390. Its totient is φ = 70520486388.

The previous prime is 70520486371. The next prime is 70520486401. The reversal of 70520486389 is 98368402507.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65016330289 + 5504156100 = 254983^2 + 74190^2 .

It is an emirp because it is prime and its reverse (98368402507) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 70520486389 - 2⁹ = 70520485877 is a prime.

It is a super-2 number, since 2×70520486389² (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 (70520486329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35260243194 + 35260243195.

It is an arithmetic number, because the mean of its divisors is an integer number (35260243195).

Almost surely, 2^70520486389 is an apocalyptic number.

It is an amenable number.

70520486389 is a deficient number, since it is larger than the sum of its proper divisors (1).

70520486389 is an equidigital number, since it uses as much as digits as its factorization.

70520486389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2903040, while the sum is 52.

The spelling of 70520486389 in words is "seventy billion, five hundred twenty million, four hundred eighty-six thousand, three hundred eighty-nine".