126355033684971 has 24 divisors (see below), whose sum is σ = 224631170996960. Its totient is φ = 66648808976256.

The previous prime is 126355033684933. The next prime is 126355033684993. The reversal of 126355033684971 is 179486330553621.

It is a happy number.

126355033684971 is a `hidden beast` number, since 1 + 2 + 6 + 3 + 5 + 50 + 33 + 68 + 497 + 1 = 666.

It is not a de Polignac number, because 126355033684971 - 2⁷ = 126355033684843 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a junction number, because it is equal to n+sod(n) for n = 126355033684899 and 126355033684908.

It is not an unprimeable number, because it can be changed into a prime (126355033684871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 77139824386 + ... + 77139826023.

It is a 1-persistent number, because it is pandigital, but 2⋅126355033684971 = 252710067369942 is not.

Almost surely, 2^{126355033684971} is an apocalyptic number.

126355033684971 is a deficient number, since it is larger than the sum of its proper divisors (98276137311989).

126355033684971 is a wasteful number, since it uses less digits than its factorization.

126355033684971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154279650435 (or 154279650432 counting only the distinct ones).

The product of its (nonzero) digits is 97977600, while the sum is 63.

The spelling of 126355033684971 in words is "one hundred twenty-six trillion, three hundred fifty-five billion, thirty-three million, six hundred eighty-four thousand, nine hundred seventy-one".