126693804578 has 32 divisors (see below), whose sum is σ = 223790636160. Its totient is φ = 53184799360.

The previous prime is 126693804577. The next prime is 126693804581. The reversal of 126693804578 is 875408396621.

It is not an unprimeable number, because it can be changed into a prime (126693804571) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4302275 + ... + 4331622.

It is an arithmetic number, because the mean of its divisors is an integer number (6993457380).

It is a 1-persistent number, because it is pandigital, but 2⋅126693804578 = 253387609156 is not.

Almost surely, 2^126693804578 is an apocalyptic number.

126693804578 is a deficient number, since it is larger than the sum of its proper divisors (97096831582).

126693804578 is a wasteful number, since it uses less digits than its factorization.

126693804578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8633962.

The product of its (nonzero) digits is 17418240, while the sum is 59.

The spelling of 126693804578 in words is "one hundred twenty-six billion, six hundred ninety-three million, eight hundred four thousand, five hundred seventy-eight".