126170221847 has 2 divisors, whose sum is σ = 126170221848. Its totient is φ = 126170221846.

The previous prime is 126170221841. The next prime is 126170221871. The reversal of 126170221847 is 748122071621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 126170221847 - 2⁶ = 126170221783 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126170221841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63085110923 + 63085110924.

It is an arithmetic number, because the mean of its divisors is an integer number (63085110924).

Almost surely, 2^126170221847 is an apocalyptic number.

126170221847 is a deficient number, since it is larger than the sum of its proper divisors (1).

126170221847 is an equidigital number, since it uses as much as digits as its factorization.

126170221847 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 75264, while the sum is 41.

The spelling of 126170221847 in words is "one hundred twenty-six billion, one hundred seventy million, two hundred twenty-one thousand, eight hundred forty-seven".