70491509287 has 2 divisors, whose sum is σ = 70491509288. Its totient is φ = 70491509286.

The previous prime is 70491509269. The next prime is 70491509323. The reversal of 70491509287 is 78290519407.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70491509287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70491501287) 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, 35245754643 + 35245754644.

It is an arithmetic number, because the mean of its divisors is an integer number (35245754644).

Almost surely, 2^70491509287 is an apocalyptic number.

70491509287 is a deficient number, since it is larger than the sum of its proper divisors (1).

70491509287 is an equidigital number, since it uses as much as digits as its factorization.

70491509287 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1270080, while the sum is 52.

The spelling of 70491509287 in words is "seventy billion, four hundred ninety-one million, five hundred nine thousand, two hundred eighty-seven".