70443156557 has 2 divisors, whose sum is σ = 70443156558. Its totient is φ = 70443156556.

The previous prime is 70443156491. The next prime is 70443156593. The reversal of 70443156557 is 75565134407.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52897240036 + 17545916521 = 229994^2 + 132461^2 .

It is a cyclic number.

It is not a de Polignac number, because 70443156557 - 2¹⁰ = 70443155533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70443156257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35221578278 + 35221578279.

It is an arithmetic number, because the mean of its divisors is an integer number (35221578279).

Almost surely, 2^70443156557 is an apocalyptic number.

It is an amenable number.

70443156557 is a deficient number, since it is larger than the sum of its proper divisors (1).

70443156557 is an equidigital number, since it uses as much as digits as its factorization.

70443156557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1764000, while the sum is 47.

The spelling of 70443156557 in words is "seventy billion, four hundred forty-three million, one hundred fifty-six thousand, five hundred fifty-seven".