126971572089 has 8 divisors (see below), whose sum is σ = 169297475200. Its totient is φ = 84646691856.

The previous prime is 126971572009. The next prime is 126971572093. The reversal of 126971572089 is 980275179621.

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

It is not a de Polignac number, because 126971572089 - 2⁹ = 126971571577 is a prime.

It is a super-2 number, since 2×126971572089² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126971572009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107712 + ... + 515310.

It is an arithmetic number, because the mean of its divisors is an integer number (21162184400).

Almost surely, 2^126971572089 is an apocalyptic number.

It is an amenable number.

126971572089 is a deficient number, since it is larger than the sum of its proper divisors (42325903111).

126971572089 is a wasteful number, since it uses less digits than its factorization.

126971572089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511439.

The product of its (nonzero) digits is 3810240, while the sum is 57.

The spelling of 126971572089 in words is "one hundred twenty-six billion, nine hundred seventy-one million, five hundred seventy-two thousand, eighty-nine".