126700853891 has 2 divisors, whose sum is σ = 126700853892. Its totient is φ = 126700853890.

The previous prime is 126700853879. The next prime is 126700853933. The reversal of 126700853891 is 198358007621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 126700853891 - 2¹⁴ = 126700837507 is a prime.

It is not a weakly prime, because it can be changed into another prime (126700853801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63350426945 + 63350426946.

It is an arithmetic number, because the mean of its divisors is an integer number (63350426946).

Almost surely, 2^126700853891 is an apocalyptic number.

126700853891 is a deficient number, since it is larger than the sum of its proper divisors (1).

126700853891 is an equidigital number, since it uses as much as digits as its factorization.

126700853891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 725760, while the sum is 50.

The spelling of 126700853891 in words is "one hundred twenty-six billion, seven hundred million, eight hundred fifty-three thousand, eight hundred ninety-one".