126271320051 has 8 divisors (see below), whose sum is σ = 169302329280. Its totient is φ = 83710595432.

The previous prime is 126271320047. The next prime is 126271320067. The reversal of 126271320051 is 150023172621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 126271320051 - 2² = 126271320047 is a prime.

It is not an unprimeable number, because it can be changed into a prime (126271320041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117570525 + ... + 117571598.

It is an arithmetic number, because the mean of its divisors is an integer number (21162791160).

Almost surely, 2^126271320051 is an apocalyptic number.

126271320051 is a deficient number, since it is larger than the sum of its proper divisors (43031009229).

126271320051 is a wasteful number, since it uses less digits than its factorization.

126271320051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235142305.

The product of its (nonzero) digits is 5040, while the sum is 30.

Adding to 126271320051 its reverse (150023172621), we get a palindrome (276294492672).

The spelling of 126271320051 in words is "one hundred twenty-six billion, two hundred seventy-one million, three hundred twenty thousand, fifty-one".