70530157657 has 2 divisors, whose sum is σ = 70530157658. Its totient is φ = 70530157656.

The previous prime is 70530157613. The next prime is 70530157667. The reversal of 70530157657 is 75675103507.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45800708121 + 24729449536 = 214011^2 + 157256^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70530157657 is a prime.

It is not a weakly prime, because it can be changed into another prime (70530157667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35265078828 + 35265078829.

It is an arithmetic number, because the mean of its divisors is an integer number (35265078829).

Almost surely, 2^70530157657 is an apocalyptic number.

It is an amenable number.

70530157657 is a deficient number, since it is larger than the sum of its proper divisors (1).

70530157657 is an equidigital number, since it uses as much as digits as its factorization.

70530157657 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 771750, while the sum is 46.

The spelling of 70530157657 in words is "seventy billion, five hundred thirty million, one hundred fifty-seven thousand, six hundred fifty-seven".