126353663345656 has 8 divisors (see below), whose sum is σ = 236913118773120. Its totient is φ = 63176831672824.

The previous prime is 126353663345639. The next prime is 126353663345671. The reversal of 126353663345656 is 656543366353621.

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (64) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7897103959096 + ... + 7897103959111.

It is an arithmetic number, because the mean of its divisors is an integer number (29614139846640).

Almost surely, 2^{126353663345656} is an apocalyptic number.

It is an amenable number.

126353663345656 is a deficient number, since it is larger than the sum of its proper divisors (110559455427464).

126353663345656 is a wasteful number, since it uses less digits than its factorization.

126353663345656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15794207918213 (or 15794207918209 counting only the distinct ones).

The product of its digits is 629856000, while the sum is 64.

The spelling of 126353663345656 in words is "one hundred twenty-six trillion, three hundred fifty-three billion, six hundred sixty-three million, three hundred forty-five thousand, six hundred fifty-six".