70820115187 has 2 divisors, whose sum is σ = 70820115188. Its totient is φ = 70820115186.

The previous prime is 70820115089. The next prime is 70820115229. The reversal of 70820115187 is 78151102807.

It is a strong prime.

It is an emirp because it is prime and its reverse (78151102807) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 70820115187 - 2¹⁵ = 70820082419 is a prime.

It is not a weakly prime, because it can be changed into another prime (70820175187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35410057593 + 35410057594.

It is an arithmetic number, because the mean of its divisors is an integer number (35410057594).

Almost surely, 2^70820115187 is an apocalyptic number.

70820115187 is a deficient number, since it is larger than the sum of its proper divisors (1).

70820115187 is an equidigital number, since it uses as much as digits as its factorization.

70820115187 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31360, while the sum is 40.

The spelling of 70820115187 in words is "seventy billion, eight hundred twenty million, one hundred fifteen thousand, one hundred eighty-seven".