70248191987 has 2 divisors, whose sum is σ = 70248191988. Its totient is φ = 70248191986.

The previous prime is 70248191977. The next prime is 70248192023. The reversal of 70248191987 is 78919184207.

It is a weak prime.

It is an emirp because it is prime and its reverse (78919184207) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 70248191987 - 2¹⁰ = 70248190963 is a prime.

It is a super-2 number, since 2×70248191987² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (70248191977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35124095993 + 35124095994.

It is an arithmetic number, because the mean of its divisors is an integer number (35124095994).

Almost surely, 2^70248191987 is an apocalyptic number.

70248191987 is a deficient number, since it is larger than the sum of its proper divisors (1).

70248191987 is an equidigital number, since it uses as much as digits as its factorization.

70248191987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2032128, while the sum is 56.

The spelling of 70248191987 in words is "seventy billion, two hundred forty-eight million, one hundred ninety-one thousand, nine hundred eighty-seven".