126761666647 has 48 divisors (see below), whose sum is σ = 162475646976. Its totient is φ = 96076972800.

The previous prime is 126761666623. The next prime is 126761666657. The reversal of 126761666647 is 746666167621.

It is not a de Polignac number, because 126761666647 - 2¹¹ = 126761664599 is a prime.

It is a super-2 number, since 2×126761666647² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 126761666591 and 126761666600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126761666617) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 49573093 + ... + 49575649.

It is an arithmetic number, because the mean of its divisors is an integer number (3384909312).

Almost surely, 2^126761666647 is an apocalyptic number.

126761666647 is a deficient number, since it is larger than the sum of its proper divisors (35713980329).

126761666647 is a wasteful number, since it uses less digits than its factorization.

126761666647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3040 (or 2999 counting only the distinct ones).

The product of its digits is 18289152, while the sum is 58.

The spelling of 126761666647 in words is "one hundred twenty-six billion, seven hundred sixty-one million, six hundred sixty-six thousand, six hundred forty-seven".