126834217686 has 32 divisors (see below), whose sum is σ = 307476892800. Its totient is φ = 38434611240.

The previous prime is 126834217651. The next prime is 126834217721. The reversal of 126834217686 is 686712438621.

It is a happy number.

126834217686 is a `hidden beast` number, since 12 + 68 + 3 + 421 + 76 + 86 = 666.

It is an interprime number because it is at equal distance from previous prime (126834217651) and next prime (126834217721).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 106762216 + ... + 106763403.

It is an arithmetic number, because the mean of its divisors is an integer number (9608652900).

Almost surely, 2^126834217686 is an apocalyptic number.

126834217686 is an abundant number, since it is smaller than the sum of its proper divisors (180642675114).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

126834217686 is a wasteful number, since it uses less digits than its factorization.

126834217686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213525641 (or 213525635 counting only the distinct ones).

The product of its digits is 4644864, while the sum is 54.

The spelling of 126834217686 in words is "one hundred twenty-six billion, eight hundred thirty-four million, two hundred seventeen thousand, six hundred eighty-six".