126356064563011 has 4 divisors (see below), whose sum is σ = 126471881305224. Its totient is φ = 126240247820800.

The previous prime is 126356064562997. The next prime is 126356064563017. The reversal of 126356064563011 is 110365460653621.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 126356064563011 - 2²⁹ = 126355527692099 is a prime.

It is a super-2 number, since 2×126356064563011² (a number of 29 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126356064563017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57908369470 + ... + 57908371651.

It is an arithmetic number, because the mean of its divisors is an integer number (31617970326306).

Almost surely, 2^{126356064563011} is an apocalyptic number.

126356064563011 is a deficient number, since it is larger than the sum of its proper divisors (115816742213).

126356064563011 is a wasteful number, since it uses less digits than its factorization.

126356064563011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115816742212.

The product of its (nonzero) digits is 2332800, while the sum is 49.

The spelling of 126356064563011 in words is "one hundred twenty-six trillion, three hundred fifty-six billion, sixty-four million, five hundred sixty-three thousand, eleven".