126889506916 has 6 divisors (see below), whose sum is σ = 222056637110. Its totient is φ = 63444753456.

The previous prime is 126889506893. The next prime is 126889506917. The reversal of 126889506916 is 619605988621.

It can be written as a sum of positive squares in only one way, i.e., 94312866816 + 32576640100 = 307104^2 + 180490^2 .

It is a super-2 number, since 2×126889506916² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (126889506917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15861188361 + ... + 15861188368.

Almost surely, 2^126889506916 is an apocalyptic number.

It is an amenable number.

126889506916 is a deficient number, since it is larger than the sum of its proper divisors (95167130194).

126889506916 is a wasteful number, since it uses less digits than its factorization.

126889506916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31722376733 (or 31722376731 counting only the distinct ones).

The product of its (nonzero) digits is 11197440, while the sum is 61.

The spelling of 126889506916 in words is "one hundred twenty-six billion, eight hundred eighty-nine million, five hundred six thousand, nine hundred sixteen".