126142774563 has 32 divisors (see below), whose sum is σ = 188615024640. Its totient is φ = 74453097600.

The previous prime is 126142774559. The next prime is 126142774573. The reversal of 126142774563 is 365477241621.

It is not a de Polignac number, because 126142774563 - 2² = 126142774559 is a prime.

It is not an unprimeable number, because it can be changed into a prime (126142774573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 198531 + ... + 540092.

It is an arithmetic number, because the mean of its divisors is an integer number (5894219520).

Almost surely, 2^126142774563 is an apocalyptic number.

126142774563 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

126142774563 is a deficient number, since it is larger than the sum of its proper divisors (62472250077).

126142774563 is a wasteful number, since it uses less digits than its factorization.

126142774563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 738819.

The product of its digits is 1693440, while the sum is 48.

The spelling of 126142774563 in words is "one hundred twenty-six billion, one hundred forty-two million, seven hundred seventy-four thousand, five hundred sixty-three".