156966809394347 has 2 divisors, whose sum is σ = 156966809394348. Its totient is φ = 156966809394346.

The previous prime is 156966809394253. The next prime is 156966809394359. The reversal of 156966809394347 is 743493908669651.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-156966809394347 is a prime.

It is a super-2 number, since 2×156966809394347² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (156966809396347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78483404697173 + 78483404697174.

It is an arithmetic number, because the mean of its divisors is an integer number (78483404697174).

Almost surely, 2^{156966809394347} is an apocalyptic number.

156966809394347 is a deficient number, since it is larger than the sum of its proper divisors (1).

156966809394347 is an equidigital number, since it uses as much as digits as its factorization.

156966809394347 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6348948480, while the sum is 80.

The spelling of 156966809394347 in words is "one hundred fifty-six trillion, nine hundred sixty-six billion, eight hundred nine million, three hundred ninety-four thousand, three hundred forty-seven".